We can’t wait to return to Randall’s Island. For the second straight year, John Summit’s Experts Only Festival will take place at the former Gov Ball site. This time, the 31-year-old turntablist is bringing his two-day extravaganza to the green, outdoor space on Sept. 19-20. He’ll be joined by big names like GRiZ , Prospa , LYNY , Korolova and a SUBJOHNICS b2b set with none other than Subtronics . Other biggies shared as part of their “phase one” lineup rollout include Taiki Nulight , Devault ,