Justin Gabriel Hurwitz (born January 22, 1985) is an American film composer and a television writer. He is known for being a frequent collaborator with filmmaker Damien Chazelle, having scored all of his feature length films thus far: Guy and Madeline on a Park Bench (2009), Whiplash (2014), La La Land (2016) and First Man (2018). For his work on La La Land, Hurwitz won two Academy Awards: Best Original Score and Best Original Song for "City of Stars". He has also won three Golden Globes, two Grammys, and one BAFTA.