Chris Daughtry, Slash

Put up your devil horns — American Idol's Top 4 are about to rock.

Legendary Guns N' Roses lead guitarist Slash will guide the crooners through all things rock 'n' roll as the week's celebrity mentor. Slash, who's sold 100 million albums and earned seven Grammy nods for his various projects, is currently working on a solo album and with his current band, Velvet Revolver.

Once the Top 4 have put their spin on some rock classics, No Doubt and Daughtry will grace the stage to keep the fist-pumping energy going on results night. No Doubt is gearing up for a summer tour and putting the finishing touches on an album planned for 2010.

Season 5 Idol contestant Chris Daughtry and his band will perform "No Surprise," the first single from their upcoming sophomore album.

Are you excited for rock week? Which performance are you looking forward to most?

For the latest on American Idol, tune into TV Guide Network's Idol Tonight every Wednesday at 8 pm/ET and Idol Wrap every Friday at 8 pm/ET with co-hosts Kimberly Caldwell and Justin Guarini. Plus get more on your favorite Idols every Friday with American Idol Rewind at 7 pm/ET.

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