Music in resourcepack cannot be changed

I made a resourcepack with changed sounds and music. It worked fine until the new music was implemented in vanilla Minecraft. Minecraft played the normal music when the resourcepack was opened, not the changed music I made.

What I expected to happen was...:
I expected Minecraft would play the music of the resourcepack under "sounds/music" or "sound/music" or just "music" in the resourcepack folder (I changed the music in all folders).

What actually happened was...:
The Original music of the game was played, even when the resourcepack was loaded.

Steps to Reproduce:
1. Make a resourcepack
2. Change the music files in the music folder
3. Play Minecraft to hear they didn't change at all.