The music industry has a long and sordid history of ripping off the artists...
The music industry got cold sweat from the diversity of available media (vinyl, magnetic tapes, optical disks, whatever) and the easyness of internet sharing and binded the artists with all-encompassing contracts, taking the music out of their hands: you are not allowed to perform your own songs in public without your label sanctioning it (and making millions from your fans by selling them beer) first because, technically, they are not your songs any more.
In return, the label sends its armies of lawyers (along with corrupt government elements) to Hell and beyond to track, terrorize and imprison teenagers who had the audacity to publicly share even a small exrept of the (formerly yours) work, and grand you your 0.00000000001% cut from the process.
I only know the book publishing "established" rules a little bit, and -unexpectedly- they are not too much in favor for the writer either.
A good initiative, especially in the music industry, is to have different classifications: streaming is not vinyl is not concert, and those things need to be handled seperately. Artists need to stop signing those all-encompassing deals and a very good start would be e.g. to use a label to produce an LP, then go to a different label and let them handle your content via streaming on the internet: do NOT give up all rights for your art, because that is what you live from. The labels will resist of course but if enough artists do it, then it is done.