R&B singer Chris Brown has earned a measure of musical redemption and forgiveness from ex-girlfriend Rihanna by collaborating on new music together, three years after Brown pleaded guilty to assaulting the pop star.

Brown, 22, and Rihanna, 24, were openly tweeting each other and promoting their collaboration on each other's singles over the weekend as the Barbadian "We Found Love" singer celebrated her 24th birthday.

"@chrisbrown Turn up the music remix #RihannaNavy #Teambreezy enjoy!!!" the birthday girl tweeted on Sunday with a link to her collaboration on Brown's single, "Turn Up the Music," before posting another tweet with a link to her duet with Brown on a remix of her single "Birthday Cake."

Rihanna provided vocals on a remix of Brown's new uptempo dance song "Turn Up The Music" while Brown lent his voice to Rihanna's sexually charged song "Birthday Cake."

The singer almost derailed his career three years ago on the night before the Grammys, after he was arrested for beating up his then-girlfriend, Rihanna, and since then, Brown has been working to rehabilitate himself in the eyes of fans.

Reuters