Katy: I wasn't allowed to listen to secular music when I was a kid, but there was a time when I was hanging out at my friend's house. We're trying on all our outfits, like girls do, and out of nowhere I heard the lyrics to 'Killer Queen.' Time stood still. The music was totally different from anything I'd heard. I still love Freddie Mercury. He was flamboyant with a twist of the operatic, but more importantly, he just didn't give a f---.