Lenny Kravitz' Michael Jackson Collabo: Another artist cashing in?

Over the weekend, an unreleased Michael Jackson song called "Another Day" leaked to the web. Unconfirmed reports suggested it was a collaboration with Lenny Kravitz.

This afternoon, Kravitz spoke up:

"The version that's out is not mixed, but... the song was recorded by Michael and myself. I produced it for him, I wrote the song, and I played all the instruments on the track. It was one of the most amazing musical experiences that I've ever had. It was done by two people who had respect for each other and who loved music."

Kravitz said he didn't know who leaked the tune, and denied any involvement. "[My copy] has been locked up in a vault," he joked.