Rock On: Secret Celebrity Musicians!

Anne Hathaway! Halle Berry! Johnny Depp! See which Hollywood stars moonlight as musicians

Credit: Ralph Notaro/Splash News Online

Updated: Monday Nov 01, 2010 | 06:00 AM EDT By: Hana Choi

ADRIAN GRENIER

Entourage star Adrian Grenier cut his teeth studying drama at N.Y.C.'s own Fame, LaGuardia High School of Music and Arts. But music – rather than acting – called out to him, and soon he was playing the drums, bass and guitar for bands like Kid Friendly and The Honey Brothers. "He never gets tired," fellow Honey Brother D.S. Posner says of Grenier. "Beautiful, sweet voice. Can play – and insists on playing – all instruments. Looks good with or without a beard."