You are a singer and guitarrist that makes it's own songs. You play guitar better than how you sing, but you don't sing bad.
Do you apply the lean startup and put out a song on spotify as soon as possible? or do you do something else? How would you translate paul graham's essays into a music career?
This is the bible of business in music industry.
Then study the business-end from Taylor Swift to Tycho to Post Malone and Sean Mendez. Oh, and especially Lil Nas X and what he did.
I would say there are a lot of lean ideas playing out in the music industry across genres -- you just need to translate what they are doing to how Eric Reis might do it :-)