At this point there would be nothing more to risk. Become a capitalist and start your own company. You know the side piano stuff is making a nice living for something you love to do. Start a full time piano tutoring business and put up videos on youtube. Generate a social media presence in your local community and post advertisements everywhere there's a free spot available. Places like bulletin boards at college or telephone polls at bus stops and alongside sidewalks. You could also self learn a trade and become a piano repair guy. Replacing strings, pedals, buttons, lights, paint and cleaning detailing. There is a huge world of entrepreneurship around pianos that you could step into. You could even be a piano instructor for students anywhere in the world.

I'm personally in your same position but lower down the scholastic totem poll and much younger. There's also a inequality on the opposite side where not having enough education and experience limits entering the field you studied for.