The pair are said to be working on a track alongside producer Polow Da Don at a recording studio in Santa Monica.

"They've been working on it together," a source told E! Online.

The claims follow reports that the couple have also started working on their next studio albums, just over a month after they were allegedly involved in an violent altercation in Los Angeles.

As previously reported, Brown was last week charged with two felonies over the incident on February 8th.

It's claimed the singer became violent towards the Rihanna during an argument in his car.

He will find out next month whether he faces jail time for the alleged attack.

The singer has already issued a public apology over the reported incident. Rihanna has refused to comment.

(by Jason Gregory)