A striking document of spontaneous duet—Roscoe Mitchell & Thomas Buckner trade extended techniques, Mitchell’s probing saxophone lines against Buckner’s baritone voice. Recorded for Mutable Music, 8 O’Clock: Two Improvisations sits between free improvisation and contemporary vocal experimentalism, favoring fragile breath, multiphonics, and long-tone exploration over rhythm. Essential for listeners of avant-garde jazz and new-music vocal work.