Chris Brown will reportedly be the guest artist on a remix of Rihanna’s “Birthday Cake,” a very short, sexually provocative song on “Talk That Talk.”

There had been speculation that he might show up on the track after Kosine from the production unit Da Interz told MTV that the cameo on the song is “gonna shock the world.” Today, Miss Info of New York radio station Hot97 added that Brown will also be in the video. He has reportedly recorded both a singing verse and a rap verse for the elongated version of the salacious tune. We have reached out to Rihanna’s representative to try to confirm.

[More after the jump...]

The news comes at a time when Brown, who assaulted Rihanna in 2009,  is under fire for performing at the 54th annual Grammy Awards on Sunday and for Tweeting Valentine’s Day responses to his “haters,” that they can no long “f***” with him since he has now won a Grammy.

More as it develops. In the meantime, hear the tune, which appears as an interlude of sorts, on "Talk That Talk."

What do you think about their appearing on a song together? 

Follow Melinda Newman on Twitter @HitFixMelinda