It's an unlikely duo, but it's happening. During a recent interview with Vibe, R. Kelly confirmed an upcoming track that he collaborated with Justin Bieber on.

Bieber raised eyebrows two weeks ago when he tweeted Kells along with the message, "They aren't ready."

Now we know what that was all about. 

"I just did a song [with him]," R. Kelly told Vibe. "[Justin] just called me to do a song and it's hot. He wanted to go and do some R&B stuff so we got together and did that."

Once news hit the 'Net, Bieber let us all know that we wouldn't have to wait long to hear the track: