Wally Shoup Quartet

It’s true that the power of Wally Shoup’s saxophone can easily match a Marshall stack, but for some of us at least, an unplugged scene is where Shoup’s muscle and dexterity are shown to their best effect. Tonight, the dean of the city’s free-improv scene joins three other leading practitioners of unmapped creative sound, including the not-groove-averse bassist PK and the insistently unpredictable pianist Gust Burns. MARK D. FEFER

Fri., Dec. 17, 8 p.m., 2010