Billy Joel Joins Billy Joel Cover Band For Surprise Performance

On Friday night, Billy Joel took a stage at a venue much smaller that Madison Square Garden, where he has an ongoing residency.

When not backing Joel onstage, members of his supporting band perform as Big Shot, a tribute band to Billy Joel. The Piano Man was at their show at the Paramount Theatre in Huntington, New York, and decided to perform a three-song set. Watch collected fan footage above (via Rolling Stone).