Varèse Sarabande will release The 9th Life of Louis Drax – Original Motion Picture Soundtrack out both digitally and on CD September 2, 2016. The album features the original music composed by Canadian singer-songwriter Patrick Watson. "The director was a fan of my albums and contacted me to ask if I would do the score. I believe he needed music that was able to help support the dream states in the film," Watson stated. "The feeling of having chosen the musical direction together with the director helps to keep me on the same page for the rest of the score [especially] when scoring the opening credits first. It had a lot of the tones from the film in it which allowed me to really sink my teeth into the heart of the film in one shot."

The 9th Life of Louis Drax will be released in theaters worldwide on September 2, 2016.