The music thing is a big issue in the climbing community, mostly younger / newer climbers. I don't mind in some places if they are somewhat contained and they ask first. but not in national parks, nothing loud, and nothing obnoxiously distracting.
Some funny 'drama' on Instagram between a very skilled teenager and an older leader in the community. Kid played music in a national park and complained about not being able to find stashed pads on Instagram (leaving large foam in a national park === bad).
The older community leader posted a photo of him and park rangers taking trash/pads down. Didn't mention the kid but oh boy that kid did what a lot of teenagers do and barfed out a lot of drama. it was funny to read. Made me feel very much in old man on the stoop territory. There were more supporters taking the side that stashing pads and playing music is acceptable in a national park, and the older leaders who actually interact with rangers are 'gate keeping' and just don't understand ;0