The aesthetic came along the way I think - just through experimenting and going on tour and trying stuff out on stage having fun with it and not taking it too seriously. If I had a ballgown at home I'd wear it onstage. If I found something in a charity shop I'd wear it. That's where it grew from - just wanting to play dress-up.
The awesomeness of God is that even in the works of the Beach Boys Beatles etc. the beauty of the music is a mere reflection of what God does everyday. He creates music of all kinds and moods.