A social media app based on music has a narrow audience anyway, in my opinion: young people that still find music important enough to make it a thing. For me (old), music is something to listen to, but certainly not be obsessed about.
I find it an amazing success you have so many users to begin with! That signals that there is a market, you "just" have to focus in on it a bit more. What is the common factor of your current users? Market to that demographic. Leave the rest (for now).
A social media app based on music has a narrow audience anyway, in my opinion: young people that still find music important enough to make it a thing. For me (old), music is something to listen to, but certainly not be obsessed about.
I find it an amazing success you have so many users to begin with! That signals that there is a market, you "just" have to focus in on it a bit more. What is the common factor of your current users? Market to that demographic. Leave the rest (for now).