★ Tim Berne’s Snakeoil (Tuesday) Mr. Berne, an alto saxophonist and composer of granite conviction, has had a superb recent outlet in Snakeoil, a chamber-improv quartet with the clarinetist Oscar Noriega, the pianist Matt Mitchell and the drummer Ches Smith. The band’s third album, “You’ve Been Watching Me,” is notable not only for its expressive authority but also the presence of another member, the electric guitarist Ryan Ferriera, who rejoins the group here. (Nate Chinen)