Personally I find it funnier to believe it is only one Old Man throughout Zelda 1. Much like how there's only 1 copy per important character, there's credibility that there is only one Old Man in Zelda 1. It's a fantasy game with magic, bombs, etc. so who's to say he didn't teleport to an area...
The issue is that when it comes to music, it's that much harder to fight back as it's directly attached to the creator/corporation, which is why even in the west you get immediately DMCA'd as soon as a world-known song starts playing if you weren't given special permission prior. Despite not...
Must I announce who I use in bracket? It's not required lock picks in actual tournaments as that would suppress counterpicking. If Random is allowed, me not announcing my characters is the same thing.