This addon makes it so that when you put a copper block beneath a note block instead of having it sound very well... interesting, it sounds cool like it does in dungeons 2.
I might update this in the future to actually turn on the portal in The Swift Mod by CreativeMode. i will keep you guys posted in the comments about the update.
the reason this has to be an addon is because with the way that note blocks increase pitch it's impossible to just retexture the sound so I had to make a script that makes it do that instead.