[Myrkul]

Originally Posted by Jedi QuestMaster

Is this a legitimate release? https://www.ebay.com/itm/CLASSIC-Met...5rT:rk:24:pf:0

This is an unofficial/unauthorized release.
You can't release official music from Nintendo games without the Nintendo package (Licences, Credits, Logos...): this is a bootleg.
This statement is probably right for all other companies (SEGA, CAPCOM...)