Swalla (Remix) Jason Derulo feat. Nicki Minaj & Ty Doll
Usher has opened up about the shows he had to cancel on his European tour.
Speaking about the gigs he had to cancel in Berlin, he said: 'It was one of my harder moments. I was extremely sick.
He added: 'Berlin was very rough for me. (But) I got back on my horse.'
See the video interview below