After speaking with one of their peeps, the whole story is this.
Some of the music is commissioned by them.
Some of the music is licensed by them.
Some is free - the exact tiles will be listed as soon as they double-check which ones are which.
The issue with your modpack is that in the case of the later two - you did not look up the music yourself, but rather you ripped it from their mod. Had you implemented them yourself, it would not be an issue in their eyes.
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PSA: If you have been having stutter/FPS lag on Disco where it does not run as smoothly as other games, please look at the fix here: https://discoverygc.com/forums/showthrea...pid2306502
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