This song is quite a bit better than most of the posthumous Michael Jackson releases (which might explain why it was the only one to attain significant success on the charts), probably because it was made from an unfinished demo of a song that actually got released during Jackson’s life, albeit on a Johnny Mathis album and not under Jackson’s own name. That said, this kind of virtual duet with a dead singer is notoriously hard to pull off unless you have a close personal connection with said singer, and the fact that the song itself is decent isn’t enough to make it convincing here.
Verdict: Better than most of the posthumous Jackson songs, but still not very good.