Atlanta, GA's Mastodon have revealed some details about their new album in an interview with Billboard.com. Says drummer Brann Dailor about working with producer Brendan O'Brien:

There's so many toys to play with over at his studio, like pipe organs and all this crazy shit. There are little cool things we're going to do to the record that we've been wanting to do for a long time.

On the new record being a concept:

I think a lot of people didn't realize 'Blood Mountain' was a concept record. We made up our own story again this time, but we may try to make it a little more evident that that's what's going on. I like to keep them speculating on our message board. There's no possible way they could guess this.

He also revealed that the album will feature a fifteen minute track and that new material will probably surface at lives shows this summer while they are on tour. You can read the full text of the interview here.