The spacey San Diego psych combo Earthless comes to Carabar, 115 Parsons Ave., tonight at 10. Playing endless guitar solos is always treacherous some bands have "it" and some don't. These guys are blessed with that magic touch, backing their virtuoso turns with a menacing rhythm section that ensures any zoning out this evening will be induced by psychotropics, not boredom. If Earthless is borrowing from the early 70s, local openers Mount Carmel are straight-up late '60s blues-rock busters with hipster cred.