Mastodon's Crack the Skye is the album that might break Mastodon outside of the confines of the bearded and tattooed set, since the band relies just as much on their prog-rock sensibilties as they do their face-melting predilections. Crack the Skye is streaming right now at the band's MySpace page, so here's your chance to be rocked this morning.

You can win a copy of the album, along with a Mastodon t-shirt, a copy of Guitar Hero Metallica, and the game's kick pedal by going here. Note: Only registered Prefix users are eligible.