Hello friend! I dont know how often you come back to this website so by the time you read this I may have answered my own question lol. Do you remember your diy music pack? Yea, so I tries that out and it was fun and easy and I changed all the discs quickly but then I realized.... HOW DO I APPLY THE PACK TO MINECRAFT???? Can I please get some help?
Provided you're running Java Edition, you can apply the pack to Minecraft by putting it into the folder labelled "resourcepacks".
To find it, you need to search in your Windows menu, "%appdata%", and click on the result labeled File folder. This will open up a folder called Roaming, which apps and games often use as a place to dump extra files they create from your usage and preferences. That's especially true for Minecraft, and you'll find all those files in the .minecraft folder, which is what you should click on next. From there you should be able to find the file labeled resourcepacks, which is where you'll put your own music disc pack, and any other resource packs you download!