I'd love to tell you that girls are just not that shallow, but unfortunately I cant. I'm pretty certain I got together with my recent ex boyfriend purely because he was an amazing player. Songs which particularly wooed me were 'close your eyes' by the beatles and pretty much anything by Jimi Hendrix, just because its all so damm sexy. I'd give those a try if I were you.
Saying that, I should probably mention that most of the cheesy love songs mentioned on here would definately not have done it for me.
Good Luck