According to Ethan Hawke on the 'WTF Podcast', he wanted to play Chet Baker going back 15 to 20 years before. Richard Linklater, when approached with Hawke by the idea of a biopic, had his own idea of making a Baker film about a day-in-the-life story about the day before Baker tried heroin for the first time. But because the project couldn't gain traction, and Hawke's age not matching up after years of effort of finding a distributor, the idea was dropped.
Stephen McHattie, who portrays the father of Chet Baker in this movie, also starred in Robert Budreau's short film The Deaths of Chet Baker (2009) as Baker.
This isn't the first film Robert Budreau wrote and directed about Chet Baker, he has also made a short film called The Deaths of Chet Baker (2009).
Both Ethan Hawke and Carmen Ejogo have appeared in a Purge movie. Hawke appeared in The Purge (2013) and Ejego appeared in The Purge: Anarchy (2014).