I honestly really frickin' love the cancel sound. Why? 'Cause it sounds like something liquid-like is dropping onto like, at least some sort of metal object. It's just.. yes
oh my god I forgot the copy/erase sounds... edit: I tried, there's no way to do this before the menu music begins, and I don't know how to mute the music entirely :( edit 2 (apr 15 2023): oh yeah i also forgot the gameboy player error sound but you can find that online easily