Refuge hands its Saturday night to Cuttin' Headz, the label run by The Martinez Brothers, for a marathon session in East Williamsburg. The Bronx raised brothers are among the most in demand names in house and tech house, known for high energy, groove driven sets that stretch for hours. The 500 capacity club and its REX sound system are built for exactly this kind of long haul. The set runs overnight into the following midday, and the event is 21 and over.