Florian Jahrstrorfer is a songwriter, producer and artist from Munich, Germany. Also goes by the name of Jason OK, J$N, ATLANTIS and BoyBoyBoy. He has co-written and co-produced for an array of international artists including Rita Ora, SHINee, Gamper & Dadoni, Blasterjaxx, Tove Styrke, Zack Martino, Klaas, Brooks, Jay Mason, Kush Kush, Gestört aber Geil, Glasperlenspiel, Junge Junge and many more.