1030-?: Bon Iver and Black Mountain at Glasslands Gallery, S. 2nd & Kent, Williamsburg. Program: vocally driven emo (Bon Iver) and psychadelic guitar rock (Black Mountain). Price: $0 (I snuck past the poorly monitored will-call line and blended in with the sold-out crowd.) Suffice to say, the crowd is far more vocal (and sarcastic) here.