Get in on the free Saturday-night activities at the Getty with experimental-music rebels Los Angeles Free Music Society. The group embraces off-beat music, lo-fi noise rock and DIY culture. The evening's performances include Extended Organ, Le Forte Four, Smegma and Tom Recchion. Getty Center, Harold M. Williams auditorium, 1200 Getty Center Drive, L.A. 7:30 p.m. Sat. Free. Reservations required, (310) 440-7300. http://www.getty.edu.