(MUSIC) For a band already revered for their epic and graceful live shows, it's admirable that Secret Machines have purposefully chosen to raise their standards even higher on their current tour. Tonight they'll be performing in the round, an intimate configuration that will place every audience member deeper within the powerful trio's gorgeous, swirling psychedelia. (The Showbox, 1426 First Ave, 628-3151. 8 pm, $14 adv/$16 DOS, all ages.)