Motheater live in world underneath Denver's normal music scene. They don't play in the known clubs or get written about in Westword. They don't know what a record label is for. Their shows almost seem like spontaneous happenings, spread by word of mouth and obscure Internet postings. I saw them last night at a tiny dark warehouse space on Brighton Boulevard, just beyond the railroad tracks and all those new overpriced lofts. Their music is a dark mass that moves with slow intensity. Look carefully beneath Denver's nightlife and you just might get to see them sometime.