Hmmmmmm... I think I've heard this before... This Is It appears to be a remix of Heal the World, I Just Cant Stop Loving You and a few of his other songs... I know that this is probably not going to go down too well with the MJ fans, but thank goodness that THIS IS IT!!!
RIP Michael ...and please your family and management let us in peace too
No YouTube posts yet of the song, but as it's been all over the news today, you will have needed to be on a tropical island not to have heard it already!
update: This is It film preview....