Jack Black Surprises Cast of Broadway's 'School of Rock' – Billboard

The cast of Broadway’s new musical ‘School of Rock’ got the endorsement Sunday of someone they’ve desperately wanted to impress for months — Jack Black.

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Jack Black surprises cast of Broadway's 'School of Rock

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Jack Black surprises Broadway's 'School Of Rock' cast

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School of Rock' Kids 20 Years Later: What They Learned From the Movie – Billboard