Amy Winehouse's rendition of LESLEY GORE's 1963 hIt IT'S MY PARTY has been leaked online.
The British star recorded the tune - her first official new song in four years - for producer Quincy Jones' upcoming tribute album Q: Soul Bossa Nostra.
The original song was produced by Jones. The cover was produced by Winehouse's on/off collaborator Mark Ronson.
The album, which is released next week (09Nov10), also features performances from Mary J. Blige and Usher, among others.
But Jones admits it was a thrill to work with Winehouse. He tells Billboard.com, "She was amazing... We bonded."