Twisted Sister frontman Dee Snider surprised U.S. TV audiences on Friday night (10Dec10) when he took the stage for a festive-themed jamming session with Maroon 5 rocker Adam Levine and The Roots.
The heavy metal star appeared on comedian Jimmy Fallon's late night talk show, where Levine was guest performing with house band The Roots.
And when the funnyman asked Snider to perform an impromptu Christmas carol, he jumped onto the stage, shouting, "Let's do it!"
The studio audience went wild as Snider took the mic as Levine added back-up vocals, while Fallon played guitar with The Roots for a rocking rendition on holiday hit Silver Bells.