Exclusive Photos: Katy Perry's Rolling Stone Cover ShootPlus: The Pop Star on Russell Brand, Health Care and Her Musical Mission
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"Since the age of nine all I've wanted to do is share my perspective and hopefully help people through my music, whether it just makes someone smile or a song becomes someone's mantra for life or a motto or whatever. I'm not a dummy. I know 'California Gurls' isn't going to save the world. But I got a lot of heart from my upbringing, and I put a lot of heart in my songs."