Songs: Christina Aguilera "Beautiful"; Pink "Get This Party Started"
The legendary songwriter Linda Perry believes that songs come to her already finished. Working with superstars like Pink, Christina Aguilera and Katy Perry are not only memorable but a journey for the singer/songwriter. When asked about her work with Pink in 2003, Perry explained how fast the hit songs created for Pink and Aguilera came to her. "It's like some little person inside my brain pushed play, and the song is just kind of coming through me. I can't explain it, and I can't believe it. Every single time it happens, it freaks me out," she said. "Some people think I'm crazy for having this logic, but if it takes me more than 15 minutes to come up with a song, I walk away from it. That's the way I work."