Radiohead, Dr. Dre & Snoop Dogg and the Black Keys were announced Monday as the headlining acts for the 2012 Coachella Valley Music and Arts Festival in Southern California as the lineup for the annual event was revealed.  For the first time this year, the event has been expanded to a second weekend, with the same lineup performing over each set of three days.

Among the other acts scheduled to perform are Florence & the Machine, Bon Iver, Pulp, Oasis guitarist Noel Gallagher's solo band, and many more.  The festival is scheduled for April 13-15 and April 20-22 and will take place at the Empire Polo Grounds in Indio, California.