There is the originaldate tag, which is always the oldest date in the release group. I think this is what you are looking for. If you want you can set it as the date with a script like
I tested few songs, “Original Release Date” and “Original Year” and it’s the release date of the album, VA album or soundtrack, even if the song if from that album, I want to add the year from the first release.
For example, the song A was released in these albums:
artist album - 2000
VA album - 2005
Soundtrack - 2010
VA album 2 - 2015
I want to use the year from the first album, the lowest year.
I don’t need it to be 100% correct, but if it would be just 50%, it’s not good, because it could be 2015 instead of 2000, or 2019 instead of 1989.
These songs I want to process are just random songs, not albums, in albums I have the correct year, I just want to add the year to these random songs.
Correct year is also if I google the song, almost every time the youtube song is found and release year is below - it’s always the correct year.