Retribution Gospel Choir debuted in 2005 as primarily a live enterprise spearheaded by two seminal masters of spare, quiet indie rock, Low's Alan Sparhawk and Mark Kozelek of the Red House Painters and Sun Kil Moon. A series of enthusiastically received tours found the two guitarists reveling in the opportunity to rock out far more than they ever did their main bands, unleashing sludgy, classic rock-infused riffage and squalling simultaneous solos, and covering of the likes of Neil Young and the Rolling Stones. By the time the group got around to releasing their self-titled de...