Earlier quoted context omitted.
I am reminded of the story about ceramics students being told that half would be graded on quantity and half would be graded on the quality of a single piece of work. https://excellentjourney.net/2015/03/04/art-fear-the-ceramic... It turns out that the students who were just churning out pots ended up making the pots that were ultimately better. I think there's probably something to be said for constantly creating.
Just FYI this story originally was about photography as clarified by the author at https://jamesclear.com/repetitions In photography, you can get lucky. When I come back from holidays and review a thousand of random snapshots, a couple of them look great. Take 200 shots of a single thing, and one of them might be pro-level due to pure chance. Yet I'm not sure how well this "randomly great" percentage would translate…
They do their best on every song and that's just how it turns out.