Sam Rivers and Don Pullen performed together — I had completely forgotten. “Capricorn Rising” is an 11-minute almost entirely duet track from a 1975 album of the same name. And in the ensemble Roots the two were joined by saxophonists Arthur Blythe, Chico Freeman and Nathan Davis, bassist Santi Debriano and drummer Idris Muhammad, recording the album Stablemates and captured on video, playing “Lester Leaps In” — perfect example of stretching “jazz” while honoring it (name those quotes and allusions!).