Justin Drew Tranter (June 16, 1980) is an American musician, songwriter and activist. He has written songs for Britney Spears, Gwen Stefani, Linkin Park, Selena Gomez, Justin Bieber, DNCE and Fall Out Boy. Tranter was the lead singer of Semi Precious Weapons, a rock band based in New York. He is also a board member of GLAAD, an organization that promotes LGBTQ acceptance in the entertainment and news industries.Justin Tranter and his three older brothers were raised by his parents in Lake Zurich, Illinois. He studied musical theatre at the Chicago Academy for the Arts from 1994–98. While at the Chicago Academy for the Arts, he started an annual AIDS Benefit. Wikipedia