USHER and his wife, Jennifer Goicoechea, went viral after singing along to Backstreet Boys hits during a nostalgic night out in Las Vegas.

The video also included pictures of Usher with Backstreet Boys members Nick Carter, AJ McLean, Kevin Richardson, Howie ...

Usher proudly belts classic Backstreet Boys hits at the band's Sphere Las Vegas residency. Alongside his wife, the singer passionately sings 'I Want It That Way' and 'Everybody (Backstreet's Back)' ...