Sat., Sept. 14, Classixx

MARRS building, 4 p.m., no cover

Summer isn't officially over until September 21, but once Labor Day has passed, the weeks in between start to feel like some sort of pleasant-yet-melancholy limbo. The remnants of the season should be sopped up with gusto (if not a little desperation), and the final This block party of its inaugural series promises to be an excellent place in which to do so. It's headlined by Los Angeles-based electronica duo Classixx, which will be joined by Midi Matilda and the Frail. The concert series has gotten better each month, and with the highly danceable Classixx topping it all off, a raucous celebration of the summer's end is all but inevitable. 1050 20th Street,