As has been long rumored, the music of Led Zeppelin will indeed be bursting from the speakers at the 2008 Bonnaroo Music & Arts Festival.

But though Zeppelin frontman Robert Plant will be at the seventh annual event, he'll be playing with recent collaborator Alison Krauss. The Zeppelin part of the festival will be represented by Lez Zeppelin, an all-female Zeppelin cover band.

Metallica's James Hetfield

Bonnaroo unveiled its most diverse lineup yet today, with Metallica, Pearl Jam, Jack Johnson, and Kanye West headlining a bill featuring more than 100 bands and 20 comedians performing on 13 stages over four days. Bonnaroo is set for June 12-15 on a massive farm in Manchester, Tennessee.

The lineup includes the likes of Willie Nelson, Sigur Ros, Ben Folds, The Raconteurs, Death Cab For Cutie, B.B. King, Levon Helm and the Ramble on the Road, Talib Kweli, Lupe Fiasco, Mastodon, Sharon Jones & the Dap Kings, Broken Social Scene, M.I.A., Iron & Wine, Ghostland Observatory, and José González.

But as has long been Bonnaroo tradition, there is plenty of fare for the jam-band crowd. Phil Lesh & Friends; My Morning Jacket; The Allman Brothers Band; The Bluegrass Allstars feat. Luke Bulla, Sam Bush, Jerry Douglas, Bela Fleck, Edgar Meyer, and Bryan Sutton; Umphrey's McGee; Yonder Mountain String Band; and Derek Trucks & Susan Tedeschi's Soul Stew Revival are all on the bill.

Bonnaroo's Comedy Tent will host Janeane Garofalo, Zach Galifianakis, Mike Birbiglia, Jim Norton, Brian Posehn, and David Cross.

Tickets go on sale exclusively through Bonnaroo.com on Feb. 16 at noon. Ticket buyers will have the option to purchase a commemorative DVD of the 2008 festival that will be sent to them in December.

Here are confirmed artists for the 2008 Bonnaroo Music and Arts Festival:

Pearl Jam

Metallica

Jack Johnson

Kanye West

Robert Plant & Alison Krauss

Phil Lesh & Friends

My Morning Jacket

The Allman Brothers Band

The Raconteurs

Willie Nelson

Death Cab For Cutie

B.B. King

Sigur Ros

Levon Helm and the Ramble on the Road

Ben Folds

O.A.R.

The Bluegrass Allstars feat. Luke Bulla, Sam Bush, Jerry Douglas, Bela Fleck, Edgar Meyer, and Bryan Sutton

M.I.A.

Umphrey's McGee

Iron & Wine

Yonder Mountain String Band

Swell Season

Talib Kweli

Derek Trucks & Susan Tedeschi's Soul Stew Revival

Broken Social Scene

Robert Randolph Gospel Show

Rilo Kiley

Gogel Bordello

Mastodon

Lupe Fiasco

Against Me!

Sharon Jones & the Dap Kings

Pat Green

Ozomatli

Tegan & Sara

Solomon Burke

Drive-By Truckers

!!!

The Avett Brothers

Israel Vibrations

Abigail Washburn & the Sparrow Quartet featuring Bela Fleck

Phil Lesh / Larry Campbell / Jackie Green

Aimee Mann

Ladytron

The Fiery Furnaces

Orchestra Baobab

Ghostland Observatory

Jose Gonzalez

Dark Star Orchestra

Minus The Bear

Donavon Frankenreiter

Lez Zeppelin

State Radio

Battles

Jakob Dylan

Two Gallants

The Sword

Vampire Weekend

Little Feat

Nicole Atkins

The Felice Brothers

Mason Jennings

MGMT

The Lee Boys

Black Kids

Serena Ryder

Steel Train

Grupo Fantasma

Back Door Slam

Bonnaroo Comedy:

Bonnaroo Late Night Chat About with David Cross

Janeane Garofalo

Zach Galifianakis

Jim Norton

Brian Posehn

Mike Birbiglia

John Mulaney

Michelle Buteau