On April 7, Dark Star Orchestra will return to San Francisco’s Great American Music Hall. The group’s performance will serve as a benefit for the Rex Foundation. This edition of the Black Tie-Dye Ball will once again offer concertgoers an opportunity to join the band and some Rex board members for a sound check reception from 6-8 PM before the music begin at 9 PM. The complete details and more about the Foundation can be found at the organization’s website.