Kneebody is a quintet that plays improvised instrumental music—you know, the stuff formerly known as “jazz”—with no strings attached. The group's soundscapes are dark and sumptuous, not to mention delightfully weird, often teetering on the bring of melody without quite getting there. Listen carefully, and you'll hear trumpets twisted by effects pedals, screwed-up break beats, and dissonance that somehow sounds consonant. Tonight, Kneebody kicks off a residency at Brookyn’s Southpaw with special guests ranging from fusion maestro Wayne Kranz to experimental beatsmith Daedelus. This song, “Call,” comes off of Kneebody’s new album. It starts out quietly and carefully with a beat and off-kilter horn harmonies, then builds layer by layer into something big, messy, and ecstatic.