| Secrets of When | |
| Type: | studio |
| Artist: | Sabir Mateen |
| Cover: | Secrets_of_when_cover.jpeg |
| Released: | 2001 |
| Recorded: | May 31, 2001 |
| Studio: | Seltzer Sound, New York City |
| Genre: | Jazz |
| Length: | 64:48 |
| Label: | Bleu Regard |
| Producer: | Michel Dorbon |
| Chronology: | Sabir Mateen |
| Prev Title: | Sun Xing |
| Prev Year: | 2001 |
| Next Title: | Brothers Together |
| Next Year: | 2002 |
Secrets of When is an album by American jazz multi-instrumentalist Sabir Mateen, which was recorded in 2001 and released on the French Bleu Regard label.
In his review for AllMusic, Thom Jurek states "The sense of aesthetic and dynamic employed by this band is startling in many cases, as the rich dimensional ambiences pursued in Mateen's compositions invite not only free improvisation but instrumental crosstalk from the very insides of the various players' instruments."
The Penguin Guide to Jazz describes the album as "'a huge step forward musically" and notes "Malik is the ideal front-line partner, and together the group carve out lines that are as empathetic and as fiercely logical as those Coleman and Cherry were making in the '50s."[1]
All compositions by Sabir Mateen