Butler, Moore And Monaghan Sing Karaoke In Michigan

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July 24, 2010 | 9:45am EST

Partygoers at a karaoke bar in Michigan were treated to a star-studded performance this week when Gerard Butler, Demi Moore and Michelle Monaghan all took to the stage to sing.

Butler and Monaghan are currently shooting Machine Gun Preacher together, while Moore is working on LOL: Laughing Out Loud with Miley Cyrus, but all three managed to take time off from their busy filming schedules for a night out.

The actors headed to the Rockstarz Karaoke Bar & Grill in Garden City, Michigan where they took to the stage together and stunned patrons with a performance of AC/DC’s classic hit You Shook Me All Night Long, according to TMZ.com.

Footage of the rowdy rendition has now surfaced online.