ICP Orchestra

Illness has sidelined Misha Mengelberg, one of the masterminds behind the Instant Composers Pool, but the group is thriving nonetheless. The drummer Han Bennink, a co-founder, has the reigns, and other key members, including the saxophonist and clarinettist Michael Moore, remain in the fold. On their latest release, “East of the Sun,” they blend topnotch musicianship, a stylistically ecumenical group identity, and an absurdist sensibility, all of which can be expected at Roulette, where they will be joined by the trombonist Ray Anderson and the vocalist Fay Victor, on the first night; the guitarist Mary Halvorson and the tuba player Marcus Rojas, on the second; and the accordionist Will Holshouser and the French-horn player Vincent Chancey, on the third. (509 Atlantic Ave., Brooklyn. 917-267-0363. May 6-8.) (Roulette; May 6-May 8.)