Ne-Yo was so ill on stage last night (July 16) at the MEN Arena in Manchester, England, that he began crying as he struggled to sing.

The R&B crooner later returned to the stage to tells fans he had never not completed a show before but couldn’t continue with his performance.

One concertgoer tells the BBC that Ne-Yo kicked off the show a half an hour late and announced that he wasn’t feeling well quite early on. “Even after the second song, for a man who is normally so cool, he was sweating. He was doing a Michael Jackson tribute and you could see that he was actually struggling to finish every musical phrase. He kept asking the audience to bear with him. Then he actually was crying. I thought it was because he had done a couple of Michael Jackson tributes and he was getting a little bit overcome, but it did seem a bit strange. He was very emotional.”

The show was eventually postponed. Ne-Yo is scheduled to perform in Liverpool tonight and in Newcastle and London over the weekend.