by Scott YanowMuhal Richard Abrams, as the founder of the AACM in Chicago, has been one of the unsung leaders of the avant-garde ever since the mid-'60s. A versatile pianist, Abrams is heard in two different settings on this, his second session as a leader. "Young at Heart" finds him stretching out on a solo piano performance that hints at earlier styles while exploring the potential sounds and silence of free jazz. Wise in Time has Abrams functioning as part of an explorative quintet with trumpeter Leo Smith and altoist Henry Threadgill, both of whom were unknown youngsters at the time. Fascinating music, it is recommended strictly for the open-eared listener who does not demand that all jazz swing conventionally.