Dancing usher steals the show at Jonas Brothers concert

A concert hall usher has achieved viral fame after Joe Jonas shared a video of the man breaking it down during a Jonas Brothers concert.

Sam Coy of Grand Rapids, Michigan, stopped by "Good Morning America" Wednesday after he was caught grooving to the music at Van Andel Arena.

Sam said it was his sister who discovered video of him on Instagram.

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"I was such a Jonas Brothers fan...and to have them post my brother on their main account, I was in awe," Alex Coy told "GMA."

Sam said he's danced to musical performances of Twenty One Pilots, Shawn Mendes, Jason Aldean and more.

"I bust a move when the rhythm comes," he added.