Trent Reznor and his longtime score collaborator Atticus Ross served as music supervisors on the upcoming documentary Before The Flood, which focuses on Leonardo DiCaprio’s climate change work. Reznor and Ross recruited Mogwai and Gustavo Santolalla, and together they composed the score for the film.

“The incredible music composed for Before the Flood was one of the most unique collaborations I can think of in scoring a film,” said producer Fisher Stevens in a statement. “Reznor, Ross, Santaolalla and Mogwai become one voice in capturing the emotion and feeling of Leonardo DiCaprio’s journey to understanding where we stand in terms of climate change, how far gone we are, what can we do about solving this issue and why people are still resistant to understanding how important it is.”

Before The Flood is in theaters in NYC and LA on 10/21. It’ll air on the National Geographic Channel on 10/30. A soundtrack to the film will be released next month. Watch a clip from the film below.