The term “psychedelia” means different things to different people, so the Southside Psychout intends to cast as wide a net as possible. Thus, out of town visitors like Montreal acid rockers Population II, L.A. bedroom popster Sonora, Philly avant-garage bangers Godcaster, and Canadian nerd rocker Gus Englehorn prepare to explore outer and inner space. The heart of this shindig, though, remains local talent, anchored by psych/prog traditionalists Nolan Potter’s Nightmare Band (naturally), alt.psychsters Annabelle Chairlegs, noise rascals Borzoi, and more. Open your third eye, prepare for takeoff, step beyond the green door, and avoid the traditional SXSW downtown crush at the Far Out Lounge’s outdoor stage on South Congress. Doors at noon, no cover, and all ages welcome.