Dan Deacon, Live In Concert: SXSW 2012

854ae5 20120315 dan deacon sxsw
Dan Deacon plays NPR Music's SXSW showcase at Stubb's Wednesday night. (Katie Hayes Luke for NPR)

Few high-profile musicians could disappear into the SXSW crowd as seamlessly as Dan Deacon, who doesn't exactly cut a lithe, otherworldly, Mick Jagger-esque figure offstage. But everything about his set at Stubb's on Wednesday night was a raving, raging bundle of surprises: Deacon puts on some of the most rivetingly unpredictable, oddly interactive concerts in the business, whether he's teaching the crowd how to move in choreographed unison -- witness the dance contest that precedes "Konono Ripoff No. 1" -- or issuing a long spoken riff that somehow invokes both Avatar and the mom from the movie Big.