I think it was Dave Crosby that said "No one should be able to write like that, and he was fucking 16". The first JB album I bought was "The Pretender" and I played it a lot. Fellow I was working with was in his late 40s and had sat and listened to "Daddy's Tune" and asked "how old is this fellow", "late 20s" I said. "Damn he shouldn't be able to write like that!".