This isn't Michael. anda are able to tell sejak the way the person pronounces the words. The voice is not particulary powerful, not as powerful as Michael's. According to the komen-komen on YouTube it's Jason Malachi who sings the song. The song is featuered on his album which was released in 2007.
Look:
link The song is also not listed in the senarai of 'unreleased Michael Jackson material' on the net.
:)
