The music video for Amy Winehouse and Tony Bennett's duet, "Body and Soul," was released Wednesday -- the day that would have been the singer's 28th birthday.

The video shows a very healthy Winehouse, further raising questions into what killed her on July 23. The cause of her death has not yet been determined, though it is known that no drugs were in her system at the time.

Winehouse's father Mitch sat down with Piers Morgan Tuesday night on CNN, where he told the host that Winehouse had been clean of drugs for years, but alcohol had become her new addiction.

He also spoke about his daughter's tumultuous relationship with ex-husband Blake. Watch the interview after the jump.