updated 05/01/2012 AT 12:45 PM ET
•originally published 04/30/2012 AT 2:35 PM ET
“It was a total surprise, and it was so cool,” said a member in the audience.
Usher performed in the show and debuted songs from his upcoming album Looking for Myself. Bieber was there to support his mentor, but the singer surprised him by coming into the audience and smashing a confetti-filled prop onto his head. They hugged and Bieber then started an impromptu dance-off.
The verdict is out on who won, but Bieber seemed to be into Usher’s moves, and the young singer later Tweeted, “@usherraymondiv U KILLED IT yesterday.”
Meanwhile, Usher showed off his skills again the following night when he performed as a man running on a treadmill. He also thanked the cast and crew privately backstage after his final performance.
– Carlos Greer