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.

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

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

Jack Black sings Ozzy Osbourne's 'Mr. Crowley' at Tom Morello's

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Jack Black & A Band Of Pre-Teens Cover Ozzy Osbourne At Tom