Watch: Austra Performs A Tiny SXSW Concert

It was hard to imagine how Austra, a clubby electronic outfit from Toronto, would sound early in the day in an intimate environment. But Katie Stelmanis and her two vocalists kindly obliged, singing a cappella to back a laptop piped to modest speakers. The result was a powerful showcase of Stelmanis' soaring voice. Watch the trio perform "The Choke" at The Driskill Hotel during SXSW 2011 in Austin, Texas.