Chris Brown and Rihanna ‘At Work’ On New Song?

Are Chris Brown and Rihanna recording a new single? According to a rep for Brown, they were indeed working at a studio last week.

The rep confirmed the news with E! recently, saying they were holed up in a West Hollywood studio working on the song Thursday.

At this point there aren't any further details. This is their fourth collaboration in recent years though, following "Nobodies Business," "Birthday Cake" and "Turn Up The Music."

Developing…