The Music Never Stops is the name of Saturday night’s Rex Foundation benefit at the Warfield Theatre in San Francisco. The bill features performances by Bob Weir & RatDog, Little Feat and The Waybacks. Joining RatDog at this show will Barry Sless, who will step in for Mark Karan as the guitarist continues to recover from throat cancer. Sless has appeared with RatDog off and on over the years, most recently at Baltimore’s Rams Head Live in August 2005.