The 33-year-old singer says that some of his choreography is difficult and he does not always get through them, reported Contactmusic.
"Ofcourse I get my moves wrong. In the process of making it, you know I had to create moves that were harder, so those moves were a little bit more complicated, and the combination of all of them together sometimes does get a little bit hard,"
"It's my actual moves, so you're learning my moves verbatim. It's really great to be able to teach people, without, fortunately, the embarrassment of being in front of an entire audience. Nowadays flash mob is fun, I think that it's accurate movement for the youth, you know finding ways to keep them moving," Usher said.