According to a short posting on the band's MySpace page, Mastodon will begin recording their new album with producer Brendan O'Brien (known from his work for Pearl Jam and Rage Against The Machine. O'Brien will also produce the upcoming AC/DC album). Sessions will be begin immediately, and more details will follow soon. Acoording to some sources, the lyrical focus will explore topics relating to Czarist Russia. The only confirmed song title so far is "The Ghost Of Karilla".

Source:	blog.myspace.com
Band profile:	Mastodon