Copy your self?

I don`t understand why the people disproved the new music of Michael Jordan (ops!... Michael Jackson). How can a person copy your self. The original music, sang by SaFire in 1991, is written by the King of Pop and Paul Anka. This "new" version is a version of his own song. What´s wrong with this?
I Think his family is the guilty to put the jingle on the internet like a unreleased. By the way, the life`s go on and, nothing is new, everything is copy. And it is not only with musics, is in all life.