Chris Brown is calling on an angel for his new single, “They Don’t Know.” The R&B superstar has announced that Aaliyah will be featured on the follow-up to “Fine China.”

The song contains never-before-heard vocals from the late singer. “I got something special for my fans. It’s called ‘They Don’t Know,'” Chris told reporters at the BET Awards 2013 press conference on Tuesday. “All new stuff that’s never been heard before.”

He shot a video for the song in L.A. over the weekend. “I shot it in the ‘hood. I went to 60th Street and Cedar Block,” he said, while explaining the concept.

“[I’m] bringing both worlds together and trying to uplift the poverty side of the community and show them where I’m from. I’m from Virginia, but everybody comes from a broken home or being broke—I remember when I was.”

“They Don’t Know” will appear on Chris’ sixth album X, due July 16. In addition to Aaliyah, the guest list includes Nicki Minaj and Kendrick Lamar, plus production from Timbaland, Polow Da Don, Danja, Pharrell, and Drumma Boy.

Listen to a snippet of the song from the video set below.