Usher wants to work with Michael Buble.
The R'n'B star is desperate to team up with the Canadian jazz artist on his new album 'Here I Stand' and has even written a song for them to perform together.
He said: "I would love to perform my track 'Forever Young' with Michael Buble. I actually wrote that song with the intention of him and me doing it together." The 'Love in This Club' singer is also keen to collaborate with US singer-songwriter John Mayer.
Usher added: "I would like to do something with John Mayer on one of my songs 'Something Special' which is on my new album. I would love him to play the guitar and sing with me on that."
The 29-year-old star, who has recorded a track with Ne-Yo for his new LP, insists he is happy his 18-year-old chart rival Chris Brown has enjoyed such success.
Usher explained: "All of this new energy is great for the industry. Chris is the guy who dances and sings, which is a lot like I do and did as a young artist. If time serves us correctly, and artists continue to better themselves, then hopefully he will follow the same path that I did."
'Here I stand', which is Usher's fifth studio album, is scheduled to be released worldwide on May 27.