Jack Black and a Band of Pre-Teens Perform Ozzy Osbourne Cover: Watch

Tom Morello shared a video of Jack Black performing a cover of Ozzy Osbourne's 'Mr. Crowley,' backed by a band of pre-teens.

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Jack Black & Kids Cover Ozzy Osbourne Hit For 100th Birthday Party

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Jack Black and young band cover Mr. Crowley for Mary Morello's 100th birthday

Jack Black and Kids Cover Ozzy Osbourne for Tom Morello of Rage Against the Machine's Mom's 100th