Sing Theory is a modern vocal quartet, dedicated to uniquely interpreting jazz and pop standards, and preserving and developing the art of vocalese. The quartet is a configuration of familiar faces from the Bay Area vocal jazz scene. Members of the group originally met through the De Anza College jazz ensemble Vocal Flight, and have sung together in several variations since the mid 1990s, including +4db, Vocalese Inc., Moodswing, and Clockwork. Sing Theory most recently appeared as the Angel City 4 in Hillbarn Theater's production of "City of Angels"
Members: Dave Duran, Zach Yaholkovsky, Juliet Green, Michelle Hawkins