You're right that live music has a unique power to organize a movement. It's important to note a few things. Firstly, live music is broken in general. Concerts are horrible experiences of awkwardness, drunkenness, and dysfunctional social dynamics. This goes for small concerts, large concerts, massive festival shows for major bands. Acts that are actually able to create an enjoyable experience are so rare there are maybe 5 in the world at any given time in the current paradigm. This doesn't apply to folk, classical, jazz, etc., which are older mediums with established models for how they should be performed, models that still function properly. I'm talking about popular music styles in general - "rock" (whatever that is anymore), and the various mish mash of electronic styles.
The only exceptions are EDM and hip hop live music culture. Both genres of music are absolute trash of the worst kind, and their audiences are made up of the lowest IQ, least aesthetically aware animals in the herd, which may be why their models for performance still work (by "work" I mean, they generate a unified social atmosphere for the audience members, where people feel comfortable to express themselves and generate energy for the performance). The people who attend these concerts are so undeveloped as human personalities that they're basically interchangeable, and they're extremely susceptible to group think and suggestion, which is why they like that kind of music in the first place. These characteristics make them an exceptionally easy audience for which to make a working model of performance - as stated, one that will create a unifying, freeing, social environment for the audience members in which they can express their feelings and generate energy.
If you want to make create a powerful movement ("scene", or whatever you want to call it) via live music, you have to figure out a model of performance and presenting what you're doing that will create a unifying social dynamic that frees people and allows them to express themselves and generate energy. Note this doesn't just mean "make good music and perform it well", there are droves of bands doing that, but their concerts are awful. I've seen many great bands in all kinds of popular styles, playing great music very well, and yet the show is a completely awkward mess where no one is really enjoying themselves or experiencing any deep catharsis.
The fact that it's become so difficult to get an audience made up of at least marginally intelligent people into a positive, socially free, unified emotional state may be a function of the lack of cohesion in modern societies as a whole, something Holla Forums has explored extensively. People are suspicious of one another, people are trying to compete with one another socially in dysfunctional ways because old social structures for coming of age, establishing hierarchy, etc., are gone, people don't know how to act around potential mates since the process of courting, and male female relations in general have been totally confused. All of these make it impossible for most people to feel comfortable freely expressing themselves in a mass public social context and so, live music culture is broken for any music that caters to anyone but the absolute dumbest sub-humans who form a unified mass by default out of their lack of personality and self awareness.
If you want to make a successful live music culture, you need to figure out how to make people in our fragmented, socially dysfunctional society, feel comfortable expressing themselves and being free in a mass public setting. You need to design a performance, and a way of presenting your performance, that somehow breaks the audience members free from the social forces outlined above.
