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Black Eyed Peas with David Guetta

INDIO, CA - APRIL 12: (L-R) Recording artists will.i.am, Taboo of The Black Eyed Peas, DJ David Guetta and apl.de.ap of The Black Eyed Peas perform onstage during day 3 of the 2015 Coachella Valley Music & Arts Festival (Weekend 1) at the Empire Polo Club on April 12, 2015 in Indio, California.

Coachella Staple: The Surprise Guest

Yahoo Music

From headliner homies to totally unexpected treats, Coachella's biggest newsmakers in recent years have always been the suprise guests! Nowadays, it's almost unheard of for a headliner to play without another star joining for a tune or two (ahem, Chili Peppers). Check out some of Coachella's most exciting unannounced appearances, from early crashers to the latest secret superstars. - By Tiffany Lee