During the Super Bowl halftime show, the three artists behind one of the greatest party songs of all time reunited.
Usher was the headliner and near the end of his 15-minute performance, he was joined by Ludacris and Lil Jon to perform 'YEAH!'.
About five minutes earlier, he was joined by Alicia Keys and the two sang 'My Boo'.
The show is over, but you can catch the rest of the game for free on TVNZ+.
More to come.
