Yeah Yeah Yeahs, The Mars Volta, Phoenix and Passion Pit have all been confirmed to play the 2009 Monolith Festival in Colorado in September.

The Mars Volta were forced to cut short their T In The Park show today (July 10), when security deemed their set too long for the allotted time.

The Mars Volta have commented further on reunion rumors sparked by a reconciliation with their former At The Drive-In bandmates.

Reuters - When guitarist Omar Rodriguez-Lopez and vocalist/lyricist Cedric Bixler-Zavala left At the Drive-In to form the Mars Volta, the duo burst out of the confines of post-punk into a kind of sprawling, Latin-infused prog that has been called everything from utterly brilliant to completely inscrutable.

The Mars Volta are gearing up for the release of their new studio album, Octahedron on June 22 and we've got an exclusive first look at the band's new video for Cotopaxi.Check it out below.