What is "byablue"

Byablue is an album on the Impulse label by jazz pianist Keith Jarrett's 'American Quartet'. Originally released in 1977, it features performances by Jarrett, Dewey Redman, Charlie Haden, and Paul Motian.

For what would be the quartet's final recording sessions, Jarrett requested that the other band members contribute compositions. Byablue consisted primarily of Paul Motian's pieces, while Bop-Be included Redman and Haden's contributions.