While there has been plenty of speculation about the cause of Amy Winehouse's death in July, another question loomed for both her loyal and casual fans: When would we hear more of the music she recorded in the months before she passed?

So far, there has been no concrete word on the material she tracked as part of her planned follow-up to her landmark 'Back to Black' album, but we do have something special: A preview of her duet with Tony Bennett on the classic 'Body and Soul.'

Recorded last March at Abbey Road Studios, the song will appear on Bennett's upcoming 'Duets II' album. In the video teaser, Winehouse talks about recording the song -- her dad, Mitch's all-time favorite -- with "Tone" in her classic irreverent, heavily accented manner, and comes across more like a starry-eyed fan than a seasoned artist.

"My dad ... was like, 'Oh, it's only my favorite song in the world you're going to sing. Oh my God! Do you even know it?' and I was like, 'Of course I know it, Mitchell. I'm your daughter, of course I know it,'" she said. "It was really exciting that he chose that song because I do love it. It's such a beautifully written song."

The single will be out this month, with all proceeds benefiting the Amy Winehouse Foundation, which was set up by Mitch Winehouse to help people -- especially youths -- deal with substance abuse. Check out the teaser below.

Watch Amy Winehouse and Tony Bennett Record 'Body and Soul'

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