The band had been touring and playing numerous shows during this time. Mastodon joined Against Me!, and Cursive for a North American tour, with Planes Mistaken for Stars opening for one leg and These Arms Are Snakes the other. A performance in Milwaukee had to be canceled due to illness on the part of Brent Hinds. Mastodon would play the Hove Festival in Norway as well as on the Main Stage 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.