This show is a fat and daisy-doused slice of new school psych with old soul glow. It’s the type of bill that makes its own demand that you come early and stay late. First off, Flower Graves, a Texas psych-pop crew that some may remember from its groovy set at last September’s Psych Del Rio, is a band you must see live. The outfit’s unique mish-mash of organ-forward head trips and jangly if wistful psych-pop is positively a pulp of pulsation when you’re in the room with it. Dig it. Meanwhile, SA psych-rock heavies True Indigo and Mockingbird Express, who serve up droning, prog-psych with frayed edges and retro blues brain blasts respectively, will open this consciousness-expanding journey in rock.