Chris Brown and Rihanna -- one of R&B's most tumultuous relationships -- spawned some memorable collaborations such as "Birthday Cake" and "Nobody's Business." Although the relationship has since ended, a previously unheard collaboration called "Put It Up" has surfaced online. The duet was originally recorded for Brown's 2014 album X, but ultimately ended up on the cutting room floor, according to Rap-Up.

"I'm gonna explore all of your body," Rihanna sings over a snappy beat to Brown, who responds, "Treat me like I'm your property / I'm about to be your biggest fan."

The chemistry between the two is definitely still there on this steamy slow jam, which comes courtesy of L.A. Leakers.

Check it out here:

Meanwhile, Rihanna is currently prepping the release of her upcoming eighth studio album. Last week, she dropped the video for her single "American Oxygen" and teased a new Florence + The Machine-sampling song "A Night." She has also previously released the Paul McCartney, Kanye West-featuring "FourFiveSeconds," and "B*tch Better Have My Money," as well as the Home soundtrack song "Towards The Sun" and a teaser of the song "Higher."

Brown on the other hand is getting used to fatherhood. Last week, he finally posted photos of his daughter Royalty, whom he learned last month that he fathered with model Nia while dating on-and-off-again girlfriend Karrueche Tran.

On the music front, Brown recently dropped remixes to Beyoncé's "Jealous" and Wiz Khalifa's Furious 7 track "See You Again," alongside his collaborator Tyga. He was also announced as one of the performers for the Hot 97 Summer Jam festival.

What do you think of "Put It Up?" Do you think RiRi and Breezy still have chemistry? Sound off in the comments section below!

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