Amy Winehouse's collaboration with American star Tony Bennett is due to be released this coming September. 

No details on the pair's duet have been released, but it has been confirmed to feature on Bennett's 'Duets II'. Also making an appearance on the forthcoming record's tracklisting will be Mariah Carey, Norah Jones and Sheryl Crow. 

Watch Winehouse perform 'Stagger Lee' from a concert earlier this year, here: