I added the resourcepack, i added the datapack but all music discs play c418 - 11
It is on a server with a few datapacks and plugins.
I added two music discs.

ignore my trash mic i forgot to mute but here is the video

Okay, so i found out what i ducked up. I had a datapack that changed one command which made it impossible to run music discs. Thank you so much for your support. If anything this datapack might not work with all of vanillatweaks datapacks.

It looks like the datapack might not be running. Did you run /reload when you installed the datapack? What happens if you try to run /function custom_music_discs_dp:set_disc_track while holding one of your discs? Or /function custom_music_discs_dp:give_all_discs?

Maybe one of your other datapacks is causing problems, have you tried the custom music discs datapack in a testing world by itself?

i have done that, i used /function custom_music_discs:give_all_music_discs (or whatever it was)
Also i did not use custom_music_discs_dp:set_disc_track (i will do it asap)
About the datapacks, i do not think they are the problem but ill check.
That is it for now.

Hmm, interesting. What did you name your tracks? Did you use any non-english characters? If you did, try removing them from the track name and see what happens.

If not, please try uploading your datapack and resourcepack zips to this issue. You should be able to drag-drop them into a new comment. That will probably be easier than me asking you a bunch of questions.

Happy to help, thanks for letting me know what the issue was. Compatibility with other datapacks is always hard to predict, but I do my best.