Monolith Festival, presented by Esurance and returning to Red Rocks Ampitheatre on September 12 and 13, has announced the Yeah Yeah Yeahs as the headlining act for Saturday night and The Mars Volta topping off the Sunday bill. This year’s line-up was revealed one band at a time over the past several weeks via Twitter and Facebook and has already generated quite a buzz. The festival will host two kick-off parties in Denver on September 11 including performances by The Cool Kids, Chromeo (DJ), Hot Tub and Boyhollow. Tickets for the festival are now on sale at the fesitval’s website.

Monolith’s line-up is the following:

Saturday, September 12

Yeah Yeah Yeahs
Girl Talk
Of Montreal
M. Ward
DOOM
The Walkmen
OK Go
Ida Maria
The Pains of Being Pure at Heart
Frightened Rabbit
Thao with the Get Down Stay Down
Hollywood Holt + Million $ Mano
Starf*cker
Thunderheist
Woodhands
These United States
Cymbals Eat Guitars
The Antlers
Cotton Jones
Gregory Alan Isakov
Lydia
Generationals
Edward Sharpe & the Magnetic Zeros
The Answering Machine
Roadside Graves
Danielle Ate the Sandwich
Speakeasy Tiger
Autovaughn
Avi Buffalo
Wendy Darling
Boulder Acoustic Society
Caitlin Rose

Sunday, September 13

The Mars Volta
MSTRKRFT
Method Man & Redman
Phoenix
The Dandy Warhols
Chromeo
The Glitch Mob
Passion Pit
WALE
The Thermals
Harlem Shakes
Monotonix
The Grates
HEALTH
Deer Tick
The Twilight Sad
The Features
Spindrift
Savoy
Bad Veins
We Were Promised Jetpacks
Beats Antique
Tigercity
French Horn Rebellion
The Pirate Signal
Neon Indian
The Knew
A Shoreline Dream
The Royal Bangs
Red Wire Black Wire
Jim McTurnan & the Kids That Killed the Man
Rachel Goodrich