They’re always up for a collaboration, and Justin Bieber and Chris Brown added their swagger to Asher Roth’s latest track “Actin Up.”

Meanwhile, Justin recently met up with the boys in The Wanted to talk about a forthcoming collaboration, though he forgot to pick up the whole party’s tab.

Nathan Sykes told press, “The one thing that’s great about Justin Bieber is he’s really focused. No matter the amount that’s happened in his life he knows exactly where he wants to be and I respect that.”

“We spent some time with him in America and after a show he said, ‘Mate I’m really buzzing about this new song do you want to come and check it out?’ Then the next week he sent us a message and said his album wasn’t going to be ready in time for it. He offered it to us and I was flattered because I was telling him he should make it his next single. We’re hoping he can get on the track for the album.”

Sykes continued, “We spent a bit of time with him in London and rang us asking if we fancied meeting for a drink. At the time we were in like an underground pub in Covent Garden and thought, ‘we can’t bring Justin Bieber here, oh s***, shall we just go somewhere nice?’ But he insisted to join us. He turned up and bought himself a beer - but he didn't buy me one the little so-and-so.”