Rihanna believes having Chris Brown on her new album "made sense."

The "You Da One" singer worked with her ex-boyfriend - who was charged with assaulting her in early 2009 - on track "Birthday Cake" and she thinks it was sensible to have him on there because he is the best musician for the job.

"I reached out to him about doing 'Birthday Cake' because that's the only person that really, it made sense to do the record. Just as a musician, despite everything else, that was going to be the person. You know, I thought about rappers, and I've done that so many times, and the hottest R&B artist out right now is Chris Brown. So I wanted him on the track, and then in turn he was like, 'Why don't you do the remix to my track?' and it was a trade off," she said.

However the Barbados-born singer admits there was another motive behind the collaboration - getting their fans to see eye-to-eye: "We did two records. One for my fans. One for his fans. And that way our fans can come together. There shouldn't be a divide, you know? It's music, and it's innocent."