An example of live performance making money - my friend and I busked the summer after high school and made $15 an hour or so, 6 hours a day before our voices gave out. So we were each able to make around $4k for college over two months. Annualized, $24k a year is not great, but it was a lot to us, and we also got about a gig offer per week which we declined. If we had wanted to be full time musicians we probably could have had a decent career in short order.