You want to know why so many musicians are kinda ugly? It's because that's how we got the chicks way back when. We weren't football players or jocks, and we most likely weren't rich. So how can a poor ugly kid get girls?
Rock 'n Roll, man. Or whatever floated their boat. You wanna hear some 80's BS that'll make your panties drop? OK, I'll do that too. A country song makes your legs go up in the air? We'll do that as well.
Music was the realm of ugly guys using tunes to get laid. Hell, it worked for me in spades. I'm no Brad Pitt, and it wasn't until I joined the Army that I really started putting on muscle.
But what happens when a smoking hot girl learns to rock out on guitar? Man, that's just not fair.
This here blows right through the "ugly guys" rule in music.