In a recent interview Mastodon recently discussed their involvement and work on the score to the upcoming Jonah Hex film. Of note, the band had this to say of the material:
We wrote variations on themes for each character, different variables for a bunch of riffs: faster, slower, heavier, lighter. It’s the Darth Vader approach.
And further explained:
Some of it was heavy, some of it was very moody. A lot of it was spacey, Melvins B-sides, Pink Floyd-like, surreal outer space, like Neil Young’s Dead Man. Swirling, nausea music.