Quintessence is a live album by the Spontaneous Music Ensemble featuring percussionist/cornetist John Stevens saxophonists Trevor Watts and Evan Parker, guitarist Derek Bailey, and bassist Kent Carter which was recorded in 1973 and released on the Emanem label.

Allmusic's François Couture noted "The true quintessence of Stevens' vision can be heard as the musicians give the best of themselves, remaining very personal in their playing (just compare Parker and Watts all the way through), while constantly keeping the focus on the group and the music happening here and now.

[4] On All About Jazz Nic Jones called it "one of the seminal recorded documents of free improvisation" and said "Viewed overall, this is a release that should appeal to anyone tired of the predictable.

[6] The Penguin Guide to Jazz selected this album as part of its suggested Core Collection.

[5][7] All compositions by John Stevens, Kent Carter, Trevor Watts, Derek Bailey and Evan Parker except where noted.