I was thinking visually. But even sound-wise I don’t think most people would hear a cello and think that’s a violin (even if they don’t know it’s a cello). But I’ve listened to a lot of Apocalyptica and 2Cellos, and I also grew up on cartoons that feature tubas frequently for comedic effect, so maybe I’m just biased.
Any type of criteria that is not absolute (like age), can and will be used to exclude certain groups of people from voting.