IU discography explained

Artist:IU
Studio:5
Ep:11
Option:5
Option Name:Single albums
Singles:47
Compilation:2

South Korean singer-songwriter IU has released five studio albums, eleven extended plays (EPs), 47 singles (including 19 as featured artist), five single albums, two remake albums and two compilation albums. In addition, the singer has collaborations and soundtracks for television series, films, and online games (including unreleased soundtracks).

The singer debuted with "Lost Child" in September 2008, which was released as the lead single for her debut EP Lost and Found (2008). The single and the EP failed to enter the charts until 2012 and were considered a failure by the singer herself.[1] The singers first studio album Growing Up was released in April 2009 and supported through three singles—"Boo", "You Know" and "Marshmallow". Between late-2008 and January 2010, there were no official South Korean charts. With the foundation of the Gaon Music Chart in February 2010,[2] the album debuted on 85 on its first issued week and later peaked at no. 6 in January 2012. In 2010, the singer released two singles; "Nagging" alongside Lim Seul-ong and "Good Day", which both peaked atop the Gaon Digital Chart and became two of the best-selling singles in South Korea, accumulating more than 4 million total sales.

Her second studio album Last Fantasy was released in November 2011 and was supported through the single "You & I". The album and the single debuted atop the South Korean charts with the album selling around 125,000 units and the single more than 6 million paid digital downloads, making it the second best-selling song in South Korea. IU's debut Japanese extended play I□U was released in December, debuting at no. 15 of the Oricon Albums Chart, selling about 12,000 copies. IU's fourth studio album Palette was released in April 2017 and supported through three singles; "Through the Night", "Can't Love You Anymore" and "Palette". The album debuted atop the Gaon Album Chart, selling a total of 97,000 copies. It became her first album to top the Billboard World Albums and peaked at no. 25 of the Top Heatseekers. Her ninth extended play Love Poem was released in November 2019. It debuted atop the Gaon Album Chart and became her best-selling album within two weeks, moving more than 160,000 physical copies. Love Poem was supported by two singles: "Love Poem" and "Blueming", both combined topping the charts for five weeks.

Over the course of her career, IU has sold over one million albums and more than 120 million paid digital downloads (with the sales of collaborative singles, soundtracks, album tracks, and other appearances included), making her the best selling female and solo artist of South Korea. IU has scored the most number one songs in Korea with a record-breaking 31 number-one songs on the Gaon Digital Chart and 18 on the Billboard K-pop Hot 100.

Albums

Studio albums

Title! rowspan="2" style="width:21em;"
Album detailsPeak chart positionsSalesCertifications
KOR
[3] 		JPN
[4] 		US
World
[5] 		US
Heat
[6]
Growing Up
  • Released: April 23, 2009
  • Label: LOEN
  • Formats: CD, digital download, streaming
6 — — —
  • KOR: 26,171[7]
rowspan="5"
Last Fantasy
  • Released: November 29, 2011
  • Label: LOEN
  • Formats: CD, digital download, streaming
1 — — —
  • KOR: 139,869[8]
Modern Times
  • Released: October 8, 2013
  • Label: LOEN Tree
  • Formats: CD, digital download, streaming
1 69 4 —
Modern Times – Epilogue
  • Released: December 20, 2013
  • Label: LOEN Tree
  • Formats: CD, DVD, digital download, streaming
4
Palette
  • Released: April 21, 2017
  • Label: Fave
  • Formats: CD, digital download, streaming
1 96 1 25
Lilac
  • Released: March 25, 2021
  • Label: EDAM
  • Formats: CD, digital download, streaming
1 23 9 18
"—" denotes releases that did not chart or were not released in that region.

Compilation albums

Album details
Smash Hits
  • Released: January 8, 2016[18]
  • Label: Warner Music Taiwan
  • Formats: CD, DVD
Smash Hits 2 – The Stories Between U & I
  • Released: September 18, 2018[19]
  • Label: Warner Music Taiwan
  • Formats: CD, DVD

Extended plays

Title! rowspan="2" style="width:20em;"
DetailsPeak chart positionsSalesCertifications
KOR
JPN
US
Heat
US
World
Korean
Lost and Found
  • Released: September 23, 2008
  • Label: LOEN
  • Formats: CD, digital download
22 — — — rowspan="6"
IU...IM
  • Released: November 12, 2009
  • Label: LOEN
  • Formats: CD, digital download
7 — — —
Real
  • Released: December 9, 2010
  • Label: LOEN
  • Formats: CD, digital download
2 — — —
A Flower Bookmark
  • Released: May 16, 2014
  • Label: LOEN Tree
  • Formats: CD, digital download, LP
2 144 — 14
  • KOR: 91,935[23]
  • JPN: 896
Chat-Shire
  • Released: October 23, 2015
  • Label: LOEN Tree
  • Formats: CD, digital download
2 — 19 4
  • KOR: 96,587[24]
  • JPN: 944
A Flower Bookmark 2
  • Released: September 22, 2017
  • Label: Fave
  • Formats: CD, digital download
3 — — 5
  • KOR: 79,532[25]
  • JPN: 479
Love Poem
  • Released: November 18, 2019
  • Label: Kakao M
  • Formats: CD, digital download
1 — 9 10
Pieces
  • Released: December 29, 2021
  • Label: EDAM
  • Formats: Digital download
— — — —rowspan="1"
The Winning
  • Released: February 20, 2024
  • Label: EDAM
  • Formats: CD, digital download
3 28 — —
Japanese
I□U
  • Released: December 14, 2011
  • Label: EMI Music Japan
  • Formats: CD, DVD
— 15 — —
  • JPN: 12,000
rowspan="2"
Can You Hear Me?
  • Released: March 15, 2013
  • Label: EMI Music Japan
  • Format: CD, DVD
— 23 — —
  • JPN: 8,500

Single albums

Title! rowspan="2" style="width:20em;"
Album detailsPeakSales
KOR
JPN
Korean
Real+
  • Released: February 18, 2011
  • Label: LOEN
  • Formats: CD, digital download
2 —
Spring of a Twenty Year Old
  • Released: May 11, 2012
  • Label: LOEN
  • Formats: CD, digital download
3 —
Japanese
Good Day — 6
  • JPN: 30,634
You & I
  • Released: July 18, 2012[34]
  • Label: EMI Music Japan
  • Formats: CD, DVD
— 5
  • JPN: 18,068
Monday Afternoon — 15
  • JPN: 7,044

Singles

As lead artist

Title! scope="col" rowspan="2"
YearPeak chart positionsSales
Certifications
Album
KOR
[36] 		KOR Billb.
[37] 		JPN
JPN Hot
[38] 		MLY
[39] 		NZ Hot
[40] 		SGP
[41] 		US
World
[42] 		WW
[43]
"Lost Child" (Korean: 미아)[44] 2008— — — — — — — — —
  • KOR: 50,000
Lost and Found
"Boo"[45] 2009— — — — — — — — —Growing Up
"You Know" (Korean: 있잖아; Rock version)[46] — — — — — — — — —
"Marshmallow" (Korean: 마쉬멜로우)[47]
39 — — — — — — — —IU...IM
"Nagging" (Korean: 잔소리)
20101 — — — — — — — —
  • KOR: 3,043,000
  • KOR: 490,000 [48]
"Good Day" (Korean: 좋은 날)1 87 6 5 — — — — —
  • KOR: 4,451,000
  • JPN: 30,634
Real
"The Story Only I Didn't Know" (Korean: 나만 몰랐던 이야기)20111 — — — — — — — —
  • KOR: 2,933,000
Real+
"Ice Flower" (Korean: 얼음꽃)[49]
8 — — — — — — — —
  • KOR: 1,733,000
"You & I" (Korean: 너랑 나)1 1 5 11 — — — 3 —
  • KOR: 7,000,000
  • JPN: 18,000
Last Fantasy
"Peach" (Korean: 복숭아)20122 3 — — — — — 24 —
  • KOR: 1,384,000
Spring of a Twenty Year Old<--Peach and Every End of the Day are originally from the Single Album, Spring of a Twenty Year Old and not from Smash Hits, a compilation album released in Taiwan.-->
"Every End of the Day" (Korean: 하루 끝)[50] 1 1 — — — — — — —
  • KOR: 2,528,000
"Beautiful Dancer"[51] 2013— — — 66 — — — — —Can You Hear Me?
"Monday Afternoon"[52] — — 15 27 — — — — —
  • JPN: 7,000
"The Red Shoes" (Korean: 분홍신)[53] 1 1 — — — — — 19 —
  • KOR: 1,359,000
Modern Times
"Friday" (Korean: 금요일에 만나요)[54]
1 1 — — — — — — — Modern Times –
Epilogue
"My Old Story" (Korean: 나의 옛날 이야기)[56] 20142 1 — — — — — — — A Flower Bookmark
"Twenty-Three" (Korean: 스물셋)20151 — — — — — — 4 —
  • KOR: 2,500,000
Chat-Shire
"Through the Night" (Korean: 밤편지)20171 18 — — — — — 16 —
  • KOR: 7,000,000
Palette
"Can't Love You Anymore" (Korean: 사랑이 잘)
1 88 — — — — — — —
  • KOR: 2,500,000
"Palette" (Korean: 팔레트)
1 50 — — — — — 4 —
  • KOR: 2,500,000
  • US: 2,000
"Autumn Morning" (Korean: 가을 아침)1 53 — — — — — — — A Flower Bookmark 2
"Sleepless Rainy Night" (Korean: 잠 못 드는 밤 비는 내리고)[59] 4 — — — — — — — —
  • KOR: 734,000
"Bbibbi" (Korean: 삐삐)20181 1 — — — 26 26 5 —
  • KOR: 2,500,000
  • KMCA: Platinum [60]
  • KMCA: Platinum [61]
"Love Poem"20191 1 — — — — — 9 —
  • KMCA: 2x Platinum [62]
Love Poem
"Blueming"1 1 — — — — 14 10 —
  • KOR: 2,500,000
  • KMCA: 3× Platinum [63]
  • KMCA: Platinum
  • RIAJ: Gold [64]
"Eight" (Korean: 에잇)
20201 1 — 25 1 14 1 1 —
  • KMCA: 2× Platinum [66]
"Celebrity"20211 1 — — 3 13 2 3 78
  • KMCA: 2x Platinum [67]
Lilac
"Lilac" (Korean: 라일락)1 1 — — 13 — 6 11 —
  • KMCA: Platinum [68]
"Coin"[69] 4 4 — — — — 26 18 —
"Strawberry Moon"1 1 — — — — 22 10 —
  • KMCA: Platinum [70]
"Winter Sleep" (Korean: 겨울잠)[71] 1 1 — — — — — — — Pieces
"Love Wins All"20241 1 — 80 — 29 11 3 25The Winning
"Holssi" (Korean: 홀씨)[72] 7 6 — — — — — — —
"Shopper"6 9 — — — — — — —
"—" denotes releases that did not chart or were not released in that region.

As featured artist

TitleYearPeak chart positionsSales
Certifications
Album
KOR
Circle
[73] 		KOR
Hot
US
World
"Suga Love"[74]
2009— — —Suga Love
"Monday thru Sunday"[75] (Korean: 월화수목 금토일)
— — —DayZ
"It's First Love"[76] (Korean: 첫사랑이죠)
20103 — —
  • KOR: 1,290,307
"I Believe in Love"[77] (Korean: 사랑을 믿어요)
11 — —
  • KOR: 1,010,437
Road for Hope
"It's You"[78] (Korean: 그대네요)
1 — —
  • KOR: 1,975,728
The First
"I Know"[79]
201142 — —V.V.I.P
"Like You"[80]
20129 14 —
  • KOR: 945,260
Vintage
"Sea of Moonlight"[81] (Korean: 달빛바다)
12 10 —
  • KOR: 1,004,426
Loen Tree Summer Story
"Not Spring, Love, or Cherry Blossoms"[82]
(Korean: 봄 사랑 벚꽃 말고) 		20141 1 21
  • KOR: 2,763,793
Hi High
"Summer Love"[83] (Korean: 애타는 마음)
4 — —
  • KOR: 1,085,944
"Sogyeokdong"[84]
4 — 21
  • KOR: 706,157
Quiet Night
"When Would It Be" (Korean: 언제쯤이면)
9 — —
  • KOR: 815,000
Pianoforte
"Leon"[85] (Korean: 레옹)
20151 — 18
  • KOR: 1,661,825
Infinite Challenge:
Yeongdong Expressway Music Festival
"Choice"[86] (Korean: 결정)
201622 — —
  • KOR: 130,098
"Secret Everyone Knows"[87] (Korean: 누구나 아는 비밀)
2017— — — People Who Stay Alone
"Love Story"[88] (Korean: 연애소설)
1 1 — We've Done Something Wonderful
"Cat"[90] (Korean: 고양이)
64 — —
"SoulMate"[91]
20181 1 —SoulMate
"Fairytale"[92] (Korean: 동화)
4 — — rowspan="3"
"First Winter"
20193 11 —
"Small Room"[93]
2020— — —
"Nakka"[94] (Korean: 낙하)
20211 1 —
  • KMCA: Platinum [95]
Next Episode
"Mother Nature (H₂O)"
2022130 81 —Moving House Part.3
"Ganadara"
1 1 10
"People Pt. 2"
202314 25 1 D-Day
"—" denotes releases that did not chart or were not released in that region.

Soundtrack appearances

TitleYearPeakSales
Certifications
Album
KOR
Circle
[96] 		KOR
Hot
US
World
"You Are Always Like That"[97] (Korean: 그러는 그대는)2009— — —Strike Love O.S.T
"To the Sea"[98] (Korean: 아라로)— — —Queen Seondeok O.S.T
"Wind Flower" (Korean: 바람꽃)— — —
"Danny Boy"[99] — — —Paradise O.S.T
"Fifth Finger"[100] (Korean: 다섯째 손가락)201011 — —19-Nineteen O.S.T
"Because I'm a Woman"[101] (Korean: 여자라서)6 — —
  • KOR: 1,478,000
Road No. 1 O.S.T
"Someday"[102] 20111 — —
  • KOR: 2,209,924
Dream High O.S.T
"Hold My Hand"[103] (Korean: 내 손을 잡아)2 9 — The Greatest Love O.S.T
"Heart" (Korean: 마음)20151 — —
  • KOR: 2,500,000
The Producers O.S.T
"Give You My Heart"20201 3 11 Crash Landing on You O.S.T
"Into the I-LAND"[106] 3 3 24I-LAND Part.1 Signal Song
"—" denotes releases that did not chart or were not released in that region.

Promotional singles

TitleYearPeakAlbum
JPN
Hot
"Friend"[107]
2012—rowspan="2"
"Aishiteru"[108]
—
"The Age of the Cathedrals"[109] 2013— Can You Hear Me?
"New World"[110] 76

Other charted songs

TitleYearPeak chart positionsSales
Album
KOR
Circle
[111] 		KOR
Hot
"Rain Drop"
201074 —
  • KOR: 206,934
I□U
"Merry Christmas Ahead"
7 17
  • KOR: 1,040,741
Real
"This Is Not What I Thought" (Korean: 이게 아닌데)9 —
  • KOR: 652,700
"The Night of the First Breakup" (Korean: 첫 이별 그날 밤)20 — rowspan="4"
"The Thing I Do Slowly" (Korean: 느리게 하는 일)21 —
"Alone in the Room" (Korean: 혼자 있는 방)27 —
"Good Day" 193 —
"Cruel Fairytale" (Korean: 잔혹동화)20118 —
  • KOR: 1,051,000
Real+
"Secret" (Korean: 비밀)2 5
  • KOR: 2,046,000
Last Fantasy
"Sleeping Prince of the Woods" (Korean: 잠자는 숲 속의 왕자)
3 9
  • KOR: 1,245,000
"Uncle" (Korean: 삼촌)
4 8
  • KOR: 1,755,709
"A Child Searching for Stars" (Korean: 별을 찾는 아이)
6 12
  • KOR: 1,078,444
"Wallpaper Patterns" (Korean: 벽지무늬)7 15
  • KOR: 953,344
"Wisdom Tooth" (Korean: 사랑니)8 19
  • KOR: 952,827
"Teacher"
9 25
  • KOR: 844,936
"Everything's Alright"
11 24
  • KOR: 847,469
"Last Fantasy"12 27
  • KOR: 805,567
"4AM"13 32
  • KOR: 776,856
"A Stray Puppy" (Korean: 길 잃은 강아지)17 40
  • KOR: 665,559
"L'amant" (Korean: 라망)19 49
  • KOR: 576,293
"I Really Don't Like Her" (Korean: 그 애 참 싫다)201215 12
  • KOR: 699,322
Spring of a Twenty Year Old
"Everybody Has Secrets" (Korean: 누구나 비밀은 있다)
20132 3
  • KOR: 573,315
Modern Times
"Love of B" (Korean: 을의 연애)3 7
  • KOR: 428,808
"Between the Lips (50cm)" (Korean: 입술 사이)4 5
  • KOR: 436,249
"A Gloomy Clock" (Korean: 우울시계)
6 11
  • KOR: 405,520
"Modern Times"7 10
  • KOR: 424,678
"Bad Day" (Korean: 싫은 날)8 14
  • KOR: 342,058
"Obliviate"11 23
  • KOR: 277,739
"Daydream" (Korean: 한낮의 꿈)
12 15
  • KOR: 267,560
"Havana"13 29
  • KOR: 220,376
"Walk with Me, Girl" (Korean: 아이야, 나랑 걷자)
14 26
  • KOR: 211,360
"Wait" (Korean: 기다려)17 41
  • KOR: 188,745
"Voice Mail
"		18 28
  • KOR: 188,063
"Pastel Crayon" (Korean: 크레파스)
39 27
  • KOR: 98,476
Modern Times – Epilogue
"The Meaning of You" (Korean: 너의 의미)
20143 2 A Flower Bookmark
"When Love Passes By" (Korean: 사랑이 지나가면)
4 3
  • KOR: 781,730
"Pierrot Smiles at Us" (Korean: 삐에로는 우릴 보고 웃지)
8 10
  • KOR: 499,054
"Dreams in Summer Night" (Korean: 여름밤의 꿈)
12 12
  • KOR: 465,318
"Flower" (Korean: 꽃)
14 13
  • KOR: 353,253
"Boom Ladi Dadi" (Korean: 꿍따리 샤바라)
16 14
  • KOR: 303,359
"Sing for Me" (Korean: 노래 불러줘요)
9 —
  • KOR: 339,899
Chapter 8
"The Shower" (Korean: 푸르던)20152 —
  • KOR: 1,014,210
Chat-Shire
"Shoes" (Korean: 새 신발)5 —
  • KOR: 578,505
"Knees" (Korean: 무릎)5 —
  • KOR: 730,323
"Zezé"8 —
  • KOR: 796,704
"Red Queen"
10 —
  • KOR: 427,439
"Glasses" (Korean: 안경)13 —
  • KOR: 362,363
"Ending Scene" (Korean: 이런 엔딩)20173 —
  • KOR: 2,500,000
Palette
"Dlwlrma" (Korean: 이 지금)5 —
"Jam Jam" (Korean: 잼잼)7 —
  • KOR: 461,247
"Dear Name" (Korean: 이름에게)9 —
  • KOR: 2,500,000
"Black Out"14 —
  • KOR: 283,532
"Full-Stop" (Korean: 마침표)16 —
  • KOR: 246,926
"Love Alone" (Korean: 그렇게 사랑은)19 —
  • KOR: 201,511
"Secret Garden" (Korean: 비밀의 화원)
10 —
  • KOR: 466,059
A Flower Bookmark 2
"Every Day with You" (Korean: 매일 그대와)
12 —
  • KOR: 325,396
"Last Night Story" (Korean: 어젯밤 이야기)
15 —
  • KOR: 301,981
"By the Stream" (Korean: 개여울)
19 —
  • KOR: 178,956
"Road"
201914 —Then & Now
"Above the Time" (Korean: 시간의 바깥)5 6Love Poem
"Unlucky"8 9
"The Visitor" (Korean: 그 사람)10 15
"Lullaby" (Korean: 자장가)14 17
"Flu"20217 6Lilac
"Hi Spring Bye" (Korean: 봄 안녕 봄)8 5
"Troll" (Korean: 돌림노래)
10 9
"Empty Cup" (Korean: 빈 컵)19 13
"My Sea" (Korean: 아이와 나의 바다)11 9
"Ah Puh" (Korean: 어푸)13 11
"Epilogue" (Korean: 에필로그)17 12
"Drama" (Korean: 드라마)8 7Pieces
"Next Stop" (Korean: 정거장)18 23
"You" (Korean: 너)26 32
"Love Letter" (Korean: 러브레터)23 31
"Shh.."
202420 —The Winning
"I Stan U" (Korean: 관객이 될게)23 —
"—" denotes releases that did not chart or were not released in that region.

Other appearances

SongYearOther artistsAlbum
"All You Need Is Love"[114]
2009Zitten and RanMBC Music Travel LaLaLa Live Vol. 5
"I Don't Know About Love Yet"
"I Hope"[115] Mighty MouthLove Class
"247"The Three ViewsThe Three Views: Part 3
"You Are Stunning"[116] RunFace-Off
"My Dream Is to Be a Patissiere"2010Yumeiro Patissiere
"Why"Supreme Team, Young-junAmes Room
"Gift"various artistsRoad for Hope
"Let's Go"various artistsrowspan="2"
"Alicia"2011
"Dreaming"Dream High
"Suga Luv"
BiznizThe Brand New
"I Hoppin U"rowspan="2"
"Let's Catch the Bus"
"Melody of the Wind"Leafie, A Hen into the Wild
"Memories of the Sea"
"Stranded"
2012
"Atreia"rowspan="1"
"Beautiful Song"2013Jo Jung-sukYou Are the Best!
"You Are A Miracle"various artistsSBS Gayo Daejun 'Friendship Project
"Take Care of My Dad"2015rowspan="1"
"My Dear Friend"2016
"She's Different from Me"2017Lee Hyo-riHyori's Homestay
"With the Heart to Forget You"2018rowspan="1"
"Happy Ending"[117] 2019Hotel del Luna
"One Step"[118] 2023Miral School

Notes and References

  1. Web site: Singer IU wins fans by going her own way. January 6, 2011. Kyung-ran. Lee. July 6, 2019. Korea JoongAng Daily. JoongAng Ilbo. https://web.archive.org/web/20190706094434/http://koreajoongangdaily.joins.com/news/article/Article.aspx?aid=2930559. July 6, 2019.
  2. Web site: Korea Launches First Official Music Charts Gaon. Han. Sang-Hee. February 23, 2010. The Korea Times. January 21, 2020. live. https://web.archive.org/web/20100804044458/http://www.koreatimes.co.kr/www/news/art/2010/06/201_61266.html. August 4, 2010.
  3. Gaon Album Chart peak positions for albums and extended plays:
  4. Web site: https://www.oricon.co.jp/prof/532521/products/album/. ja:IUの作品. IU's work. Oricon. ja. July 1, 2017. https://web.archive.org/web/20190701213636/https://www.oricon.co.jp/prof/532521/products/album/. July 1, 2019. live.
  5. IU Chart History: World Albums. Billboard. August 10, 2020.
  6. IU Chart History: Heatseekers Albums. Billboard. August 10, 2020.
  7. Sales figures for Growing Up are only available since January 2010. South Korean sales figure as of July 2022.
  8. Sales figures for Last Fantasy as of July 2022. Also, sales for both standard and limited editions are combined.
  9. South Korean sales figures for Modern Times as of July 2022.
  10. Web site: ja:オリコンランキング情報サービス「you大樹」. Oricon Ranking Information Service 'You Big Tree'. http://ranking.oricon.co.jp. January 15, 2014. Oricon. ja. subscription. https://web.archive.org/web/20181202070551/https://ranking.oricon.co.jp/. December 2, 2018. live.
  11. South Korean sales figures for Modern Times – Epilogue as of December 2013.
  12. South Korean sales figures for Palette as of July 2022.
  13. Japan sales figures for IU's discography as of October 2019.
    • Web site: ja:オリコンランキング情報サービス「you大樹」 －CD・ブルーレイ・DVD・書籍・コミック－. http://ranking.oricon.co.jp/. ja. Oricon. subscription. October 23, 2019. https://web.archive.org/web/20181202070551/https://ranking.oricon.co.jp/. December 2, 2018. live.
  14. United States sales figures for Palette as of May 2017.
    • IU Earns First No. 1 on World Albums Chart With 'Palette'. May 3, 2017. Billboard. Jeff. Benjamin. June 29, 2019. https://web.archive.org/web/20190430221722/https://www.billboard.com/articles/columns/k-town/7783516/iu-palette-no-1-world-heatseekers-albums-chart. April 30, 2019. live.
  15. South Korean sales figures for Lilac as of January 2024.
  16. Web site: オリコン週間 アルバムランキング 2021年03月29日～2021年04月04日 21～30位. Oricon. ja. April 7, 2021. https://web.archive.org/web/20210407033150/https://www.oricon.co.jp/rank/ja/w/2021-04-12/p/3/. April 7, 2021.
  17. Web site: Gaon Certification – Album. Gaon Music Chart. ko. May 6, 2021.
  18. Web site: Smash Hits (Taiwanese Edition) . January 15, 2016. Warner Music Taiwan. CDJapan. July 6, 2019. https://web.archive.org/web/20190706090229/http://www.cdjapan.co.jp/product/NEOIMP-11703. July 6, 2019.
  19. Web site: IU / Smash Hits 2 – The Stories Between U & I. zh. Warner Music Taiwan. July 6, 2019. https://web.archive.org/web/20190706085549/https://store.warnermusic.com.tw/store/item/5425. July 6, 2019.
  20. Sales figures for Lost and Found are only available since January 2010. South Korean sales figure as of July 2022:
  21. Sales figures for IU...IM are only available since January 2010. South Korean sales figure as of July 2022:
  22. Sales figures for Real as of May 2012. Also, sales for both standard and special limited editions are combined.
  23. Sales figures for A Flower Bookmark as of July 2022. Also, sales for both CD and LP editions are combined.
  24. Sales figures for Chat-Shire as of July 2022:
  25. Sales figures for A Flower Bookmark 2 as July 2022:
    • Web site: http://gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&amp;serviceGbn=&amp;targetTime=2017&amp;hitYear=2017&amp;termGbn=year. ko:2017년 Album Chart. 2017 Album Chart. ko. July 8, 2019. Gaon Music Chart. https://web.archive.org/web/20180112020920/http://gaonchart.co.kr/main/section/chart/album.gaon?nationGbn=T&serviceGbn=&targetTime=2017&hitYear=2017&termGbn=year. January 12, 2018. live.
    • Web site: ko:2019년 12월 Album Chart (국내). December 2021 Album Chart (National). live. https://web.archive.org/web/20210913074859/http://gaonchart.co.kr/main/section/chart/album.gaon?termGbn=month&hitYear=2019&targetTime=12&nationGbn=K&year_time=. September 13, 2021. September 9, 2021. Gaon Music Chart. ko.
    • Web site: ko:써클차트 관찰노트 1편 [누적 앨범 판매량]. Circle Chart Observation Notes Part 1 (Cumulative Album Sales). Circle Music Chart. YouTube. September 16, 2022.
  26. Sales figures for Love Poem as of December 2021:
  27. Web site: Gaon Certification – Album. Gaon Music Chart. August 12, 2021. ko.
  28. Web site: Circle Album Chart – First Half, 2024. live. https://web.archive.org/web/20240712151913/https://circlechart.kr/page_chart/album.circle?nationGbn=T&targetTime=2024&hitYear=2024&termGbn=year&yearTime=1. July 12, 2024. July 13, 2024. Circle Chart. ko.
  29. Japanese sales figures for The Winning as of March 2024:
    • Physical (1,785):
      • Web site: https://www.oricon.co.jp/rank/ja/w/2024-03-11/p/3/. ja:オリコン週間 アルバムランキング 2024年02月26日～2024年03月03日. Oricon Weekly Album Ranking February 26, 2024 – March 3, 2024. Oricon. ja. March 6, 2024. March 6, 2024. https://web.archive.org/web/20240306085431/https://www.oricon.co.jp/rank/ja/w/2024-03-11/p/3/.
    • Digital (661):
      • Web site: https://www.oricon.co.jp/rank/dia/w/2024-03-04/. ja:オリコン週間 デジタルアルバムランキング 2024年02月19日～2024年02月25日. Oricon Weekly Digital Album Ranking February 19, 2024 – February 25, 2024. Oricon. ja. March 13, 2024. February 28, 2024. https://web.archive.org/web/20240228044135/https://www.oricon.co.jp/rank/dia/w/2024-03-04/.
      • Web site: https://www.oricon.co.jp/rank/dia/w/2024-03-18/p/4/. ja:オリコン週間 デジタルアルバムランキング 2024年03月04日～2024年03月10日. Oricon Weekly Digital Album Ranking March 4, 2024 – March 10, 2024. Oricon. ja. March 13, 2024. March 13, 2024. https://web.archive.org/web/20240313035400/https://www.oricon.co.jp/rank/dia/w/2024-03-18/p/4/.
  30. Web site: Certification – Album. Circle Music Chart. April 11, 2024. ko.
  31. Sales figures for Real+ as of July 2022:
    • Web site: http://gaonchart.co.kr/main/section/chart/album.gaon?termGbn=year&amp;hitYear=2011&amp;targetTime=3&amp;nationGbn=K. ko:2011년 Album Chart. 2011 Album Chart. ko. July 7, 2019. Gaon Music Chart. Korea Music Content Association. https://web.archive.org/web/20150217214806/http://gaonchart.co.kr/main/section/chart/album.gaon?termGbn=year&hitYear=2011&targetTime=3&nationGbn=K. February 17, 2015. live.
    • Web site: ko:써클차트 관찰노트 1편 [누적 앨범 판매량]. Circle Chart Observation Notes Part 1 (Cumulative Album Sales). Circle Music Chart. YouTube. September 16, 2022.
  32. Sales figures for Spring of a Twenty Year Old as of July 2022:
  33. Web site: IU – Good Day . March 21, 2012. CDJapan. EMI Music Japan. August 10, 2020.
  34. Web site: IU – You & I (Japanese Version) – Single. July 18, 2012. EMI Music Japan. Apple Music. August 10, 2020.
  35. Web site: IU – Monday Afternoon – Single. September 14, 2013. EMI Records Japan. Apple Music. August 10, 2020. February 14, 2022. https://web.archive.org/web/20220214165427/https://music.apple.com/us/album/monday-afternoon-ep/707778888. dead.
  36. Peaks on the Circle (formerly Gaon) Digital Chart (Singles as lead artist):
  37. All except noted: IU Chart History: Billboard Korea K-Pop Hot 100. Billboard. July 1, 2019.
    • Last Fantasy songs charting: Korea K-Pop Hot 100. December 17, 2011. Billboard. January 26, 2020. https://web.archive.org/web/20150604060003/http://www.billboard.com/charts/k-pop-hot-100/2011-12-17. June 4, 2015.
    • Spring of a Twenty Year Old songs charting: Korea K-Pop Hot 100. May 26, 2012. Billboard. January 26, 2020. https://web.archive.org/web/20161110015447/http://www.billboard.com/charts/k-pop-hot-100/2012-05-26. November 10, 2016.
    • Modern Times songs charting: Korea K-Pop Hot 100. October 26, 2013. Billboard. January 26, 2020. https://web.archive.org/web/20181220233434/https://www.billboard.com/charts/k-pop-hot-100/2013-10-26. December 20, 2018.
    • Modern Times – Epilogue songs charting: Korea K-Pop Hot 100. January 4, 2014. Billboard. January 26, 2020. https://web.archive.org/web/20181006040633/https://www.billboard.com/charts/k-pop-hot-100/2014-01-04. October 6, 2018.
    • A Flower Bookmark songs charting: Korea K-Pop Hot 100. May 21, 2014. Billboard. January 26, 2020. https://web.archive.org/web/20140723005153/http://www.billboard.co.kr/?c=chart&m=k100&basedate=20140521. July 23, 2014.
    • Love Poem songs charting: Korea K-Pop Hot 100. November 30, 2019. Billboard. January 26, 2020. https://web.archive.org/web/20200103123305/https://www.billboard.com/charts/billboard-korea-k-pop-100/2019-11-30. January 3, 2020.
    • "First Winter": Korea K-Pop Hot 100. December 21, 2019. Billboard. January 21, 2020. subscription.
    • "Celebrity": Web site: Billboard K-pop Hot 100 . Billboard Korea . February 4, 2021 . ko . February 6, 2021 . https://web.archive.org/web/20210206230240/http://billboard.co.kr/chart/week/2021-02-06 . dead .
    • "Strawberry Moon": Web site: Billboard K-pop 100: 2021.11.6. November 2, 2021. Billboard Korea. ko. https://web.archive.org/web/20211102094942/http://billboard.co.kr/chart/week/. November 2, 2021. dead. November 2, 2021.
    • "Winter Sleep" and all other songs from Pieces: Web site: Billboard K-pop 100. January 15, 2022. Billboard Korea. ko. https://web.archive.org/web/20220111143912/http://billboard.co.kr/chart/week/. January 11, 2022. dead. January 12, 2022.
    • "Mother Nature (H₂O)": Web site: Billboard K-pop 100. February 19, 2022. Billboard Korea. ko. https://web.archive.org/web/20220215115101/http://billboard.co.kr/chart/week/. February 15, 2022. dead. February 15, 2022.
  38. All except noted: IU Chart History: Billboard Japan Hot 100. Billboard. July 1, 2019.
  39. Peaks on the RIM Charts:
  40. Web site: NZ Hot Singles Chart. The Official NZ Music Chart. Recorded Music NZ. May 9, 2020.
  41. Web site: RIAS Top Charts . RIAS Chart . Recording Industry Association Singapore (RIAS) . March 26, 2021 . en . March 25, 2021 . https://web.archive.org/web/20210325230000/https://www.rias.org.sg/rias-top-charts/#1562208279199-5ec9aa23-80dc. live .
    • Web site: Bbibbi. October 12, 2018. April 7, 2021. October 30, 2018. https://web.archive.org/web/20181030173412/http://www.rias.org.sg/chart.pdf. dead.
    • Web site: Blueming. November 29, 2019. April 7, 2021. December 10, 2019. https://web.archive.org/web/20191210162914/https://www.rias.org.sg/rias-top-charts/. dead.
    • Web site: Eight. May 1, 2020. April 7, 2021. May 14, 2020. https://web.archive.org/web/20200514163653/https://www.rias.org.sg/rias-top-charts/. dead.
    • Web site: Celebrity. January 29, 2021. April 7, 2021. https://web.archive.org/web/20210211181348/https://www.rias.org.sg/rias-top-charts/. February 11, 2021. dead.
    • Web site: Lilac + Coin. March 26, 2021. April 7, 2021. https://web.archive.org/web/20210406194303/https://www.rias.org.sg/rias-top-charts/. April 6, 2021. dead.
    • Web site: Strawberry Moon. October 28, 2021. November 3, 2021. https://web.archive.org/web/20211102080933/https://www.rias.org.sg/rias-top-charts/ . November 2, 2021. dead.
    • Web site: Love Wins All. February 1, 2024. February 6, 2024. https://archive.today/20240206113709/https://www.rias.org.sg/rias-top-charts/. February 6, 2024. dead.
  42. IU Chart History – World Digital Song Sales. Billboard. February 6, 2024. https://web.archive.org/web/20190512003718/https://www.billboard.com/music/iu/chart-history/world-digital-song-sales. May 12, 2019. live.
  43. IU Chart History – Global 200. Billboard. February 6, 2024.
  44. Web site: IU – Lost And Found. September 23, 2008. Kakao M. Mnet. July 13, 2019. ko. https://web.archive.org/web/20190712231057/http://www.mnet.com/album/168378. July 12, 2019. live.
  45. News: http://news.joins.com/article/3575564. ko:아이유 깜찍발랄 'Boo' 컴백 신고식 '슬픈 이미지 벗어던졌다'. IU's cute and youthful 'Boo' comeback debut. ko. Newsen. JoongAng Media Network. April 18, 2009. July 13, 2019. https://web.archive.org/web/20160304065524/http://news.joins.com/article/3575564. March 4, 2016.
  46. Web site: IU – You Know (Rock Ver.). Kakao M. Naver Music. June 30, 2009. July 13, 2019. ko.
  47. Web site: IU – IU...IM. November 12, 2009. Kakao M. ko. Naver Music. July 13, 2019.
  48. Web site: Son . Nam-won . ko:2010 벨소리1위, 男 이승철-女 2NE1 . Number 1 ringtones in 2010, male Lee Seung-chul – female 2NE1 . https://entertain.naver.com/read?oid=109&amp;aid=0002163628 . Osen . . 2023-11-21 . ko . 18 December 2010.
  49. Web site: http://sports.donga.com/3/all/20110609/37899278/2. ko:‘키앤크’ 김연아, 아이유와 함께 긴급 듀엣 결성. Kim and IU form emergency duet. June 9, 2011. July 13, 2019. The Dong-a Ilbo. ko. https://web.archive.org/web/20190713164013/http://sports.donga.com/3/all/20110609/37899278/2. July 13, 2019. live.
  50. Web site: https://music.naver.com/album/index.nhn?albumId=319680. ko:아이유 – 스무 살의 봄. IU – Spring of a Twenty Year Old. Kakao M. May 11, 2012. July 13, 2019. Naver Music. ko. https://web.archive.org/web/20171021093502/http://music.naver.com/album/index.nhn?albumId=319680. October 21, 2017. live.
  51. Web site: https://tower.jp/article/feature_item/2013/01/25/0101. ja:IU、日本オリジナル・ミニ・アルバム発売＆動画コメント到着. IU, Japanese original mini album & video announcement. January 25, 2013. Tower Records. EMI Records Japan. ja. July 14, 2019. https://web.archive.org/web/20190714072001/https://tower.jp/article/feature_item/2013/01/25/0101. July 14, 2019. live.
  52. Web site: https://www.amazon.co.jp/Monday-Afternoon-%E5%88%9D%E5%9B%9E%E9%99%90%E5%AE%9A%E7%9B%A4A-DVD%E4%BB%98-IU/dp/B00DUFW7YO/ref=ntt_mus_dp_dpt_4. ja:Monday Afternoon (初回限定盤A)(DVD付). Monday Afternoon (First Press Limited Edition A) (with DVD). Amazon.co.jp. July 13, 2019. November 9, 2013. EMI Records Japan. ja.
  53. News: Han. Jun-ho. 아이유, '분홍신'으로 '퍼펙트 올킬' 달성!. IU Achieves "Perfect All-Kill" with "The Red Shoes". July 13, 2019. Sports World. October 11, 2013. ko. https://web.archive.org/web/20131014172742/http://www.sportsworldi.com/Articles/EntCulture/Article.asp?aid=20131011023129&subctg1=10&subctg2=00. October 14, 2013. live.
  54. Web site: http://www.zdnet.co.kr/view/?no=20131220141409&amp;from=Mobile. ko:아이유 '금요일에 만나요' 뮤비 속 장기용 관심집중. IU's 'Friday' MV shows long-term interest in music . ZDNet Korea. CBS Interactive. December 20, 2013. July 13, 2019. ko.
  55. Web site: http://gaonchart.co.kr/main/section/article/view.gaon?idx=17731. ko:Gaon's 관찰노트. Gaon's Observation Notes. Gaon Music Chart. October 22, 2020. October 22, 2020. https://web.archive.org/web/20201022071217/http://gaonchart.co.kr/main/section/article/view.gaon?idx=17731. October 22, 2020. dead.
  56. IU Remakes '80s K-Pop Tune 'My Old Story' for New Single. May 19, 2014. Billboard. July 13, 2019. Jeff. Benjamin. https://web.archive.org/web/20190713112324/https://www.billboard.com/articles/columns/k-town/6092163/iu-my-old-story-new-single. July 13, 2019. live.
  57. Web site: http://gaonchart.co.kr/main/section/article/m.view.gaon?idx=16672. ko:Gaon's 관찰노트. Gaon's Observation Notes. March 19, 2020. ko.
  58. Web site: http://gaonchart.co.kr/main/section/article/view.gaon?idx=15434. ko:Gaon's 관찰노트. Gaon's Observation Notes. Gaon Music Chart. Daniel. C.. June 21, 2019. June 21, 2019. ko. https://web.archive.org/web/20190920191425/http://gaonchart.co.kr/main/section/article/view.gaon?idx=15434. September 20, 2019. live.
  59. IU Bares Her Old Soul on 'A Flower Bookmark #2' Album. September 25, 2017. Billboard. July 13, 2019. Tamar. Herman. https://web.archive.org/web/20190430173929/https://www.billboard.com/articles/columns/k-town/7973925/iu-bares-old-soul-flower-bookmark-2-album. April 30, 2019. live.
  60. Web site: http://gaonchart.co.kr/main/section/certification/list.gaon?serviceGbn=S1040. ko:가온 인증: 누적사용량 인증. Gaon Certification: Streaming. Gaon Music Chart. ko. May 5, 2019. https://web.archive.org/web/20181108105238/http://www.gaonchart.co.kr/main/section/certification/list.gaon?serviceGbn=S1040. November 8, 2018. live.
  61. Web site: http://gaonchart.co.kr/main/section/certification/list.gaon?serviceGbn=S1040. ko:가온 인증: 누적판매량 인증. Gaon Certification: Download. Gaon Music Chart. ko . May 5, 2019. https://web.archive.org/web/20190920104337/http://gaonchart.co.kr/main/section/certification/list.gaon?serviceGbn=S1020. September 20, 2019. live.
  62. Web site: https://circlechart.kr/page_cert/chart.circle?serviceGbn=S1040. ko:써클차트. Certification: Streaming. Circle Music Chart. ko. March 9, 2023.
  63. Web site: Certification: Streaming. Circle Music Chart. ko. April 11, 2024.
  64. Japan. IU. Blueming. single. 2024. 1. true. February 29, 2024.
  65. Zeliner. Xander. May 13, 2020. K-Pop Star IU Debuts on Emerging Artists Chart, Thanks to SUGA Collab 'Eight'. live. https://web.archive.org/web/20200514112633/https://www.billboard.com/articles/business/chart-beat/9377384/k-pop-star-iu-debuts-emerging-artists-chart. May 14, 2020. May 14, 2020. Billboard.
  66. Web site: http://gaonchart.co.kr/main/section/certification/list.gaon?serviceGbn=S1040. ko:가온 인증: 누적사용량 인증. Gaon Certification: Streaming. Gaon Music Chart. ko. April 7, 2022. https://web.archive.org/web/20181108105238/http://www.gaonchart.co.kr/main/section/certification/list.gaon?serviceGbn=S1040. November 8, 2018. live.
  67. Web site: Certification Streaming. Circle Music Chart. ko. November 9, 2023.
  68. Web site: December 9, 2021. Gaon Streaming Certification (December Update).
  69. Web site: IU plays a professional gambler in retro-inspired video for 'Coin'. Yeo. Gladys. NME. March 26, 2021. May 16, 2021.
  70. Web site: January 12, 2023. Circle Streaming Certification.
  71. Web site: IU to drop new song 'Pieces' next week. Chin. Carmen. NME. December 22, 2021. December 29, 2021.
  72. News: Park . Dong-sun . 아이유, Shopper·홀씨 등 더블타이틀 확정…뉴진스 혜인 피처링곡 수록 . February 9, 2024 . ETNews . February 5, 2024 . ko.
  73. Peaks on the Circle (formerly Gaon) Digital Chart (Singles as featured artist):
  74. Web site: Bizniz – Suga Luv. July 2, 2009. Naver Music. Sony Music. ko. January 21, 2020.
  75. Web site: Suho – DayZ. July 16, 2009. Naver Music. Five Senses Entertainment. ko. January 21, 2020.
  76. Web site: https://www.genie.co.kr/detail/songInfo?xgnm=80614337. ko:아이유 & 나윤권 – 첫사랑이죠. Na Yoon-Kwon & IU – It's First Love. Sim Hyun Bo. Genie Music. January 11, 2010. July 13, 2019.
  77. Web site: https://music.naver.com/album/index.nhn?albumId=177093&amp;trackId=2245285. ko:아이유, 유승호 – 사랑의 리퀘스트. Yoo Seung-ho, IU – I Believe in Love. Naver Music. Kakao M. February 8, 2010. July 13, 2019.
  78. Web site: https://music.naver.com/album/index.nhn?albumId=179823. ko:성시경, 아이유 – 그대네요. Sung Si-kyung, IU – It's You. Naver Music. Genie Music. September 28, 2010. July 13, 2019. ko.
  79. Web site: Seungri 1st Mini Album V.V.I.P. Naver Music. YG PLUS. January 20, 2011. September 30, 2019. ko.
  80. Web site: Wanted, IU – Like You. Naver Music. Kakao M. January 20, 2012. July 13, 2019. ko.
  81. Web site: Loen Tree – Loen Tree Summer Story. Kakao M. Naver Music. August 2, 2012. July 14, 2019. ko.
  82. Web site: http://www.mediapen.com/news/view/26844. ko:아이유와 '봄 사랑 벚꽃 말고' 하이포의 김성구는? '쭈구리' 멤버!...친분 눈길. Iu and High4 "Not Spring, Love, or Cherry Blossoms". April 9, 2014. July 14, 2019. ko. MediaPen. https://web.archive.org/web/20190714001745/http://www.mediapen.com/news/view/26844. July 14, 2019. live.
  83. Web site: https://music.naver.com/album/index.nhn?albumId=437030. ko:울랄라세션, 아이유(IU) – 애타는 마음. Ulala Session, IU – Summer Love. June 30, 2014. July 14, 2019. Naver Music. ko. Kakao M. https://web.archive.org/web/20170927015722/http://music.naver.com/album/index.nhn?albumId=437030. September 27, 2017. live.
  84. News: Lee. Bo-hee. ko:서태지, 아이유와 콜라보 ‘소격동’ 프로젝트..데뷔 22년만의 첫 시도. Seo Taiji Makes "Sogyeokdong Project" Collaborating with IU... For the First Time Since His Debut. http://en.seoul.co.kr/news/newsView.php?id=20140929500269. July 14, 2019. Seoul Shinmun. Seoul Shinmun. September 29, 2014. ko. https://web.archive.org/web/20160303222650/http://en.seoul.co.kr/news/newsView.php?id=20140929500269. March 3, 2016. live.
  85. Web site: https://music.naver.com/album/index.nhn?albumId=576385. ko:무한도전 영동고속도로 가요제. Infinite Challenge: Yeongdong Expressway Music Festival. August 22, 2015. Naver Music. NHS. August 10, 2020. ko.
  86. Web site: https://music.naver.com/album/index.nhn?albumId=665747. ko:형돈이와 대준이 – 결정(Feat. 아이유). Hyungdon and Daejun – Choice (Feat. IU). Naver Music. September 22, 2016. Kakao M. July 14, 2019. ko. https://web.archive.org/web/20171022220106/http://music.naver.com/album/index.nhn?albumId=665747. October 22, 2017. live.
  87. Web site: http://news.jtbc.joins.com/article/article.aspx?news_id=NB11476727. ko:아이유 "언니네 이발관 마지막 앨범 참여 영광… 잊지 않을 것". IU "Onnine Ibalgwan last album participation honor ... I will not forget.". June 1, 2017. JTBC. ko. August 10, 2020.
  88. Epik High Reflects on 'We've Created Something Wonderful,' Channeling Groot & The 'Miracle' of K-Pop. Billboard. Tamar. Herman. July 12, 2019. October 26, 2017. https://web.archive.org/web/20190712203803/https://www.billboard.com/articles/columns/k-town/8014835/epik-high-interview-weve-created-something-wonderful-groot. July 12, 2019. live.
  89. Web site: GAON′s 관찰노트 . Gaon Music Chart . November 28, 2019. ko.
  90. Web site: https://www.sedaily.com/NewsVIew/1OP1LT5G39. ko:아이유, 선우정아 신곡 '고양이' 피쳐링 참여 "이 노래 좋다는 인간들이 널렸음". IU, Sunwoo Jung-a new song 'Cat' Participate in featuring "There are many people who like this song". SE Daily. December 29, 2017. Kim. Sang-min. ko.
  91. Zico Teams up With IU For 'SoulMate' Music Video: Watch. Billboard. Tamar. Herman. July 12, 2019. July 30, 2018. https://web.archive.org/web/20190712224814/https://www.billboard.com/articles/columns/k-town/8467748/zico-iu-kpop-soulmate-music-video. July 12, 2019. live.
  92. Web site: Kim Dong-ryul unveils teaser for new single with IU. December 5, 2018. Kpop Herald. Yim. Hyun-su. July 12, 2019.
  93. Web site: https://www.yna.co.kr/view/AKR20201023028800005. ko:스윗소로우-아이유 만났다…신곡 '작은 방' 특급 피처링. Sweet Sorrow – IU met ... New song 'Small Room' a special feature. Yonhap News Agency. October 23, 2020. May 16, 2021. ko.
  94. Web site: https://entertain.naver.com/read?oid=001&amp;aid=0012523433. ko:이들이 모두 한 음반에…악뮤, 아이유·이선희 등 참여 협업앨범. Kim . Hyo-jeong. July 14, 2021. Yonhap. ko. They're all on one album… AKMU, collaboration album with IU, Lee Sun-hee. July 23, 2021. Naver.
  95. Web site: Certification Streaming. Circle Music Chart. ko. November 9, 2023.
  96. Peaks on the Circle (formerly Gaon) Digital Chart (Soundtrack appearances):
  97. Web site: Various Artists – 2009 외인구단 OST. Various Artists – Strike Love O.S.T. February 6, 2009. Naver Music. Kakao M. October 23, 2019. ko.
  98. Web site: Various Artists – 선덕여왕 O.S.T. Various Artists – Queen Seondeok O.S.T. September 14, 2009. Naver Music. Kakao M. October 23, 2019. ko.
  99. Web site: Various Artists – 낙원 OST. Various Artists – Paradise O.S.T. December 3, 2009. Naver Music. Kakao M. October 23, 2019. ko.
  100. Web site: IU – Telecinema Project, Vol. 6 – 19 (Nineteen) – Single. February 24, 2010. Jaycorps Trends. September 29, 2019. https://web.archive.org/web/20190929142103/https://music.apple.com/us/album/telecinema-project-vol-6-19-nineteen-soundtrack-single/381663972. September 29, 2019. live.
  101. Web site: http://m.mnet.com/album/199120. ko:로드넘버원 OST Part 3. Road Number One OST Part 3. Kakao M. Mnet. July 14, 2010. September 29, 2019. ko. https://web.archive.org/web/20181206235108/http://m.mnet.com/album/199120. December 6, 2018. dead.
  102. Web site: Various Artists – Dream High, Pt. 1 (Original Television Soundtrack) – Single. January 3, 2011. September 29, 2019. iTunes Store. https://web.archive.org/web/20190929142052/https://music.apple.com/us/album/dream-high-pt-1-original-television-soundtrack-single/417698253. September 29, 2019. live.
  103. Web site: IU – My Last Love (Original Television Soundtrack), Pt. 4 – Single. The Groove Entertainment. September 29, 2019. May 25, 2011. https://web.archive.org/web/20190929142055/https://music.apple.com/lk/album/my-last-love-original-television-soundtrack-pt-4-single/444687177. September 29, 2019. live.
  104. Web site: ko:써클차트 관찰노트 2편 [누적 다운로드]. Circle Chart Observation Notes Part 2 (Cumulative Download). Circle Music Chart. YouTube. September 16, 2022.
  105. Web site: http://gaonchart.co.kr/main/section/certification/list.gaon?serviceGbn=S1040. ko:가온 인증: 누적사용량 인증. Gaon Certification: Streaming. Gaon Music Chart. ko. April 8, 2021. https://web.archive.org/web/20181108105238/http://www.gaonchart.co.kr/main/section/certification/list.gaon?serviceGbn=S1040. November 8, 2018. live.
  106. Web site: IU releases 'I-Land' theme song, 'Into the I-Land'. June 19, 2020. Annie. Martin. United Press International. August 10, 2020.
  107. Web site: IU – (Live at Tokyo Kokusai Forum 09.17.2012) – Single. October 19, 2012. EMI Music Japan. October 23, 2019. https://web.archive.org/web/20191023192253/https://music.apple.com/nz/album/friend-live-version-tokyo/720560280. October 23, 2019. live.
  108. Web site: IU – Aishiteru (Live @ Tokyo Kokusai Forum 2012.09.17) – Single. November 16, 2012. EMI Music Japan. October 23, 2019. https://web.archive.org/web/20191023212305/https://music.apple.com/th/album/aishiteru-live-dong-jing-guo/720570780. October 23, 2019. live.
  109. Web site: IU – The Age Of The Cathedrals – Single. February 13, 2013. EMI Music Japan. October 23, 2019. https://web.archive.org/web/20191023192258/https://music.apple.com/jp/album/the-age-of-the-cathedrals-single/720572108. October 23, 2019. live.
  110. Web site: IU – New World – Single. March 20, 2013. EMI Music Japan. October 23, 2019. https://web.archive.org/web/20171126153625/https://itunes.apple.com/jp/album/new-world-single/id768705228. November 26, 2017. live.
  111. Other charted songs:
  112. Web site: http://gaonchart.co.kr/main/section/article/view.gaon?idx=14409. ko:Gaon's 관찰노트. Gaon's Observation Notes. Gaon Music Chart. Daniel. C.. September 12, 2018. September 12, 2018. ko.
  113. Web site: December 31, 2021. Gaon Observation Notes – Downloads (Gaon Official Youtube Channel). YouTube.
  114. Web site: Various Artists – MBC Music Travel LaLaLa Live Vol. 5. Blending. Bugs. June 18, 2009. ko.
  115. Web site: Mighty Mouth – Love Class. August 6, 2009. Naver Music. January 21, 2020. Kakao M. ko.
  116. Web site: Run – Face-Off. October 16, 2009. Naver Music. January 21, 2020. Kakao M. ko.
  117. Web site: IU writes lyrics and sings ending OST of "Hotel Del Luna". Osen. August 19, 2019. V Live. October 25, 2019. Na Hee. Kim. October 25, 2019. https://web.archive.org/web/20191025151522/https://channels.vlive.tv/C7A6F1/vtoday/1.11705121. dead.
  118. Web site: 아이유가 또! 장애인 특수학교 음원 피처링…깜짝 재능기부 [MD이슈]]. mydaily. January 31, 2023. March 3, 2023. Seo-yeon. Park.

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