The Chicago-based AACM, a loose collective of improvising musicians including Muhal Richard Abrams, Henry Threadgill, Anthony Braxton, Jack DeJohnette, Lester Bowie, Roscoe Mitchell, Joseph Jarman, Famadou Don Moye, Malachi Favors and George Lewis was formed in 1965 and included many of the key players in the nascent international free improv scene. (Braxton recorded many times with Bailey and Tei