In 80s this song was recorded as a DUET with Paul Anka. And it was a song with different lyrics. It was similar to TII but different. It is not clear when MJ recorded TII song which was released in October 2009. It was not a duet anymore..It was juts him singing and playing piano, the lyrics changed too. This info is from wiki and other articles I have read. This copy of TII Branca found accidently as we know. The background was added later by Sony before they released it. So, basically it is not that clear when TII was recorded.
So, I did not vote because I do not know.
Michaels' voice sounds on this tape more like early 90-s imo.