LL Cool J has revealed he's just finished recording a new track with Jennifer Lopez.
He says the song has a mid-tempo and lots of melody.
And the rapper reckons J-Lo might release the duet as her next single.
"I just did a record with Jennifer Lopez two days ago," he told Radio 1.
"We did a new song for her album. Well it's actually going to be her next single, I think - it's a lot of fun, a lot of fun.
"It's got like a mid-tempo beat, pretty melody, you know what I'm saying. I'm rapping, she's singing. We go back and forth with stuff. It's kind of cool, it's fly."
LL Cool J releases his new album 10 on Monday.
It include collaborations with The Neptunes, Trackmasters and P Diddy.