Swedish chanteuse El Perro Del Mar (aka Sarah Assbring) took the Mercury Lounge stage last night with three dapper dudes, each seated and skinny-suited. She preferred standing, though, mostly with an acoustic around her neck and occasionally toe-tapping a tamborine placed foot-side, often the only percussion for her delicate, strummed sadness. Tough slot--rainy night and incongruously placed on a bill ...