This sounds like for you a grate musician(s) only play music that you personally like and they stop playing music when they earn enough to live of it. Louis Arm

This sounds like for you a grate musician(s) only play music that you personally like and they stop playing music when they earn enough to live of it. Louis Armstrong seems to be a mediocre musician by your definition. I'd say that that is a piss poor definition of what makes a grate musician.