| Air Liquide | |
| Origin: | Cologne, Germany |
| Genre: | Acid house Ambient techno Trance Experimental |
| Years Active: | 1991–present |
| Label: | Structure Rising High Sm:)e Communications Blue Harvest |
| Current Members: | Ingmar Koch Cem Oral |
| Past Members: | Mary Applegate |
Air Liquide is a German electronic band composed of Ingmar Koch (a.k.a. "Dr Walker") and Cem Oral (a.k.a. "Jammin' Unit") that was formed in Frankfurt in 1991. Koch and Oral continued to record together under the pseudonyms Madonna 303[1] and Jammin' Unit & Walker.[2]
Oral and Koch in 1991 met at a recording studio in Frankfurt.[3] After a variety of jam sessions in Koch Studio, the duo released Neue Frankfurter Elektronik Schule. Lyrics and vocals for some songs was contributed by Koch's former girlfriend Mary Susan Applegate.[4] Air Liquide was in the mid-1990s especially known for their live performances. The band broke up in 2005 after the previous year's album Let Your Ears Be the Receiver. The duo has continued to reunite and perform at various festivals since 2012.