of the Download Festival and then the Pitchfork Music Festival. During this time, the band opened for Metallica on the Sick of the Studio tour. The band also played at the 2007 Dubai Desert Rock, the 2008 Bonnaroo Music Festivals and the inaugural Mayhem Festival. Mastodon then toured with Slayer, Trivium, Lamb of God and several other metal bands in 2008 for The Unholy Alliance tour 2008. The band performed "Colony of Birchmen" at the 2007 MTV Video Music Awards live with Josh Homme. After the televised performance, Brent Hinds was reported to have sustained a severe head injury. Blabbermouth.net initially reported that it was the result of a brutal assault, but the police report later suggested that an inebriated Hinds had started a fight with System of a Down bassist Shavo Odadjian and vocalist William Hudson, also known as Reverend William Burke of Achozen. "Sleeping Giant" was made available as a downloadable song for Guitar Hero III: Legends of Rock, "Colony of Birchmen" was included on Harmonix's Rock Band 2 and Volition's Saints Row 2, and "Divinations" was featured in Madden NFL 10 and Saints Row: The Third. Mastodon contributed a cover version of Harry Nilsson's "One" to the video game Army of Twos advertisement campaign. The band members are fans of Aqua Teen Hunger Force and in 2007, Mastodon performed the opening song of Aqua Teen Hunger Force Colon Movie Film for Theaters, "Cut You Up with a Linoleum Knife". Crack the Skye and Live at the Aragon (2009–2010) Crack the Skye was released on March 24, 2009, as a normal version and a deluxe version (which includes all songs in instrumental versions as well as their normal versions) and entered the Billboard 200 at number 11 a week later. The album is produced by Brendan O'Brien and Scott Kelly of Neurosis returns as a guest musician on the title-track. In a MusicRadar interview, guitarist Bill Kelliher confirmed the album is about an "out-of-body experience", and looks at the concepts of astral travel, wormholes, Stephen Hawking's theories and the spiritual realm. The album follows a quadriplegic who learns astral projection. On his journey he flies too close to the sun, burning his umbilical cord which connects him to his body, and flies into oblivion. At the same time in Czarist Russia, Rasputin and his cult were channeling spirits and brought the quadriplegic to their time. He explains his