Choir! Choir! Choir! brings its wildly fun sing-along concert to 04 Center in Austin. The crowd-powered group is known for turning big rooms full of strangers into one huge choir, belting out well-loved songs together with harmonies that give you goosebumps. Nobody needs to audition or read music, just show up ready to sing, cheer and let loose. 04 Center is a roomy venue that makes the whole crowd feel like part of the show.