Music Saturday: There's a clinic on modern Psych Rock music at the Southgate House as three disparate practitioners team up for a 9:30 p.m., all-ages show. Headliners The Black Angels touch on the Velvet Underground brand of psychedelia, with droning hypnotics, as well as later artists like Spacemen 3 and Jesus and Mary Chain. D.C.'s Dead Meadow have been working their brand of hard-rocking trippiness for the past 13 years, while L.A.'s Spindrift make soundtracks for desert vision quests, influenced by the likes of The Doors, Hawkwind and Electronic music pioneer, Bruce Haack. The band's cinematic sound has been used to soundtrack several film projects (including the Tarantino-produced Hell Ride), and, this spring, the group released Classic Soundtracks Volume 1, featuring 14 themes from various scores, which were made into short films by various directors, touching on everything from Bollywood to film noir (the films, music videos and trailers from the project have been screened to a national audience on the IFC network). Check out a few examples from Spindrift's soundtracks project below. Tickets for tonight's show are $18 at the door.