If you listen to commercial radio, this is not news: Katy Perry had a huge year. She went No.1 five times. She was the most played artist on the radio. But the record industry is so weird, it's hard to know whether this kind of success translates into huge amounts of money.
So we asked.
I walked over to Katy Perry's record label. She's on Capital, which is under EMI. I met Greg Thompson, executive vice president of marketing and promotion at EMI.