I feel like this has been said elsewhere and when, multiple times, but in case it hasn't, or not in precisely this way or not in a BGBB post I can link to:
Players create culture. Admins do, too, but admins can't fill the vacuum, we can just trickle in to it.
Players can create culture in many ways. Players can, have, and do roleplay being a musician and being a band. Players who don't want to create music culture that way can, have and do roleplay that their characters are fans of whatever they want their characters to be fans of. In absence of content (when there isn't music being actively roleplayed by others or played back from an IC recording), players can still create music culture by roleplaying as if such content actually were available on demand.
All of these things MUST happen with or without admin support. With admin support, there are additional possibilities, but "creating music culture" is a tall order which would consume all available time and resources if players didn't contribute in all of the above ways.
The good news is, there IS another way in which players can contribute. Type "help scripting", link over to the scripting forum, and draft something. It doesn't even necessarily have to be in BabbleOn format. All players are welcome to contribute content and could go ahead and write the performances you would like to see. Was this ever really in doubt? There are NLM channels dedicated to music content. There are NLM programs dedicated to music content. The potential to turn a script (prose, BabbleOn, or whatever) into a live performance run by GMs is never off the table either.
I appreciate the enthusiasm and willingness.