Sully & G-Rezx Dropz the Most Punishing Dubstep Tune Wakaan has seen [Wakaan] Two years after their inaugural 2019 collab “Clique,” WAKAAN favorites G-Rex and Sully are adding another to their discographies for “Back It Up.” Hazy vocals guide the build up towards a cinematic, daunting drop full of dominant basslines and commanding frequencies. The second drop decelerates while adding additional layers of penetrating alien lasers. “Back It Up” serves as a preview of the duo’s collaborative EP, set for release later this fall. You can catch G-Rex and Sully live this fall in select cities as support for PEEKABOO’s Black Hole Tour, with Sully also making a 3-date November run for Champagne Drip’s Champagne Trip Tour.