7. Mastodon - 'Once More Round The Sun'
The Atlanta metal four piece began crafting their 6th LP while on tour last summer with Rob Zombie and Five Finger Death Punch. "It's gonna be massive and insane, lots of epic greatness," Mastodon drummer Brann Dailor told Rolling Stone midway through the process. "There will be lots of huge riffs and new directions. It's real weird, real math-y, real straightforward. It's up, down and all around...It's a culmination of everything for the band. The snowball keeps rolling and collecting snow." Produced by Nick Raskulinecz, the LP hit stores on June 24th and was widely hailed as the best metal LP of the year.