Katy Perry Meets Biggest Fan on Ellen

Why is Katy Perry's music so powerful? On the season premiere of Ellen, one fan says it's the "soundtrack to her life." Yes, sometimes things are indeed "hot n cold."

Updated Apr. 24, 2017 5:37PM ET / Published Sep. 13, 2010 1:54PM ET

Why is Katy Perry's music so powerful? On the season premiere of Ellen, one fan says it's the "soundtrack to her life." Yes, sometimes things are indeed "hot n cold."