Green Day's Billie Joe Armstrong joins London covers band in pub

What do you do when one of your childhood heroes joins you on-stage as you cover one of their songs?

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A cover band was playing a pub. Then Billie Joe Armstrong jumped

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Billie Joe Armstrong Joins Cover Band on Green Day Song

Green Day's Billie Joe Armstrong Joins Cover Band on Stage for

billie: Green Day singer Billie Joe Armstrong surprises London

Green Day's Billie Joe Armstrong Joins Band Onstage at London Bar

Green Day frontman almost thrown off stage after surprising band

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Radio X on X: Billie Joe Armstrong of @GreenDay joins fan and

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Green Day's Billie Joe Armstrong Joins Covers Band in London Pub

Billie Joe Armstrong Joins Green Day Cover Band To Perform Classic