It won't be out until later this year, but Mudvayne plans to wrap up the recording of its fourth album this week.

"I've got three songs left to track, but it's just vocal tracking," frontman Chad Gray tells Billboard.com. "It's just vocal tracking. All the guitars are done. All the drums are done. All the bass is done. We're just doing housekeeping right now. We're just listening, checking things out, reviewing stuff, making sure the performance is the right one -- the little odds and ends you do before you pack up everything and go home."

The quartet recorded the as-yet-untitled album in New Orleans with Dave Fortman, who produced 2005's "Lost and Found." Things went smoothly, Gray says, and he's confident that the final product will surprise -- and, he hopes, please -- Mudvayne's core fans.

"It's not light years away from what we've done in the past, but it's not the same," the singer explains. "This has got some really interesting music on it, stuff you don't expect. It just kinda moves forward; it's not linear from what we've done before. But I think it's gonna be a great record."

Gray says the band expects the album to come out in the fourth quarter of the year, with touring to follow. Meanwhile, he and guitarist Gregg Tribbett are stepping outside Mudvayne for the next several months as part of Hellyeah, the all-star group that includes former Pantera/Damageplan drummer Vinnie Paul and Nothingface members Jerry Montano and Tom Maxwell.

The group's self-titled debut comes out April 10 via Epic, and an upcoming world tour includes this year's edition of Korn's Family Values Tour.