Justin Tranter has written songs with American Julia Michaels .
He has written songs for Britney Spears , Gwen Stefani , Linkin Park , Kelly Clarkson , Selena Gomez , Justin Bieber , DNCE , Kesha , In Real Life , Fifth Harmony , 5 Seconds of Summer , Ariana Grande and Fall Out Boy , and frequently co-writes with fellow song-writer Julia Michaels .
Justin Tranter