Henry Threadgill Zooid, This Brings Us To, Volume 1 (PI Recordings). Threadgill names his band Zooid after a cell “that is able to move independently of the larger organism to which it belongs.” Accordingly, five musicians simultaneously and freely invent within, around and through structures devised by saxophonist and flutist Threadgill, one of the leading lights of the avant AACM movement. The music has moments of amusing bluster, others of reflective calm. Its intricacy demands patient listening.