That sounds like a pretty sketchy theory to me! As a musician, back in the day you had to learn to play your instrument without making mistakes in order to wor

That sounds like a pretty sketchy theory to me! As a musician, back in the day you had to learn to play your instrument without making mistakes in order to work and record. These days with software based recording you can edit so easily it's not a requirement to be that good - or even play an instrument. There's less demand in popular music for the professional musician of that type in the earlier days who can play a song 100 times without making a single mistake. That being said, I think there are still plenty of good musicians out there. There's just a lot of other stuff as well.