FILM: At Electronic Cinema, sound artists myrmyr and Kadet Kuhne will perform live electronic scores for experimental films by Sue-C, Paul Clipson, and Maia Cybelle Carpenter, incorporating and celebrating "unexpected ingredients and impressions, breaking open new forms not-yet-categorizable".

8 p.m. // Artists' Television Access (992 Valencia St) // $6-10

MUSIC: Kronos Quartet, one of the most diverse, best-known, and most influential contemporary string quartets in the world, premieres of a new staging of Black Angels, George Crumb's musical response to the Vietnam War, which was the inspiration for the formation of the Kronos Quartet.

8 p.m. // Yerba Buena Center for the Arts (701 Mission St) // $25-30

FESTIVAL: Mayor Newsom hosts the 2010 Arab Heritage Celebration & Concert, featuring live music and food, as part of Arab Heritage Month.

5 to 7:30 p.m. // San Francisco City Hall (401 Van Ness Ave) // free