"He's perfect in every way. This journey has been more amazing than we could've ever imagined." Watch Carey sing part of an unreleased song for Da Brat's birthday below. More from Billboard ...

Let’s delve into more inside deets. Da Brat, the famous rapper, celebrated her big 5-0 on April 15. Mariah, who’s known for hits like We Blong Together had a surprise for her. She sang an ...