Cool link, if you read all of it , some of the songs have completely different alternative versions. The guy speaks of a slower version of jam and compares it to a carnaval.
This all makes for great possible deluxe re issues like the big Marvin Gay albums had.
When you know all of this exist you realize we really have had nothing yet, this stuff could breath new life into old songs.
Something not talked about here but very intriguing is the very first version of Beat It which had a heavy metal feel to it but then Quincy asked to tone it down because it was supposed to be a hit.
It’s a bit sad knowing all this is that we usually get some remixed songs nobody of the fanbase is interested in.