I first heard “Pushing Onlys,” the lovely tune that opens Sun and Shade (Woodist), the latest album from upstate New York band Woods, as it wafted through the air this summer at the Pitchfork Music Festival. I’d heard of the band but never listened to a note of their music, and that song (which opened their afternoon set) did a real pied-piper number on me. Nothing else in the set knocked me out the same way, but the serendipitous discovery stuck. I can’t remember the last time that happened. The group returns to Chicago on Saturday at Subterranean, with Matt “MV” Valentine as a guest member.