Bill Kelliher is known as the rock-solid foundation of a band known for its constant reinvention and refusal to bow to expectations. Bill's roots in hardcore punk and thrash metal, combined with years of putting passion to work, forged a signature sound that would ultimately become the backbone of the sludgy, psychadelic and progressive riffs that are Mastodon. In this honest and unflinching feature-length documentary, Bill reveals all that he has sacrificed to achieve his dreams - and what he learned from fifteen years on the road. From the lowest of lows, to international success as one of today's biggest metal bands, it's all here "The Sound" - Bill Kelliher sits down to teach you his favorite Mastodon tunes, warm-ups and other exercises " The Story" - featuring never-before-seen interviews with bandmates Brann Dailor and Brent Hinds, along with Kevin Sharp of Primate and Brutal Truth 2+ hours of song tutorials, teaching solos, riffs and more 2+ hours of guitar instruction covering guitar technique Live concert footage plus a full rig tour of Bill's gear Outtakes and blooper reel