True to its name, the Philly-based art-rock troupe known as Man Man thrives on repetition. Often starting with a busy but self-contained piano riff — as on the affecting “Head On (Hold On To Your Heart),” from 2013’s On Oni Pond — frontman Honus Honus makes songs like a baker working a slab of dough, rolling it out and out and out to the limits of its structural integrity. The effect is a quietly building cumulative power. By contrast, experimental New Yorker Xenia Rubinos makes exhilarating alt-pop with a jump-cutting array of sonic flotsam — everything from tight funky drums and fizzy keyboards to squeaky door hinges — that fly in and out of the mix at breathtaking speeds. At the center of the chopped-up grooves there is Rubinos’ deeply soulful voice, both a forceful narrator and an instrument unto itself — the dizzying “Whirlwind,” off her 2013 debut Magic Trix, lives up to its title with turbulent layers of oohs and percussive vocal ad-libs.