The track, called "Cherry Wine," surfaced online this week, but has since been taken down due to copyright restrictions. Fans will be able to hear it on Nas' upcoming album, "Life is Good," due out July 17.
Winehouse and Nas trade verses on the track, which samples James Brown's "Funky Drummer."
Nas teamed up with the Grammy-winning singer for recording sessions back in 2008. Another track they recorded, "Like Smoke," appears on the singer's posthumous album, "Lioness: Hidden Treasures," released last year. Producer Salaam Remi, who worked on Winehouse's "Frank" and "Back to Black," was also behind the Nas-Winehouse collaboration.
It's been almost a year since Winehouse's death on July 23, 2011, at age 27.