Adult Swim will launch the sixth installment of its annual Singles program next week, releasing an original song for free each Monday. The 2015 edition of the Singles program boasts an eclectic lineup, with exclusive songs from Slayer and Skrillex. For Slayer, the series will be the latest promotional effort for their upcoming 11th studio album, Repentless, set for release September 11th. As for Skrillex, the DJ-producer recently co-produced a new track from R&B singer Kelela along with Clams Casino. The untitled song, which features a guest verse from Ratking rapper Hak, debuted on Know Wave’s Gully Type online radio show.