Republicans keep using artists' music without permission, and the artists aren't happy about it.

But Tom Petty was very pleased when his song was played when President Obama walked out on stage after President Clinton's speech.

But Petty was pleasantly surprised on Wednesday night, when his song "I Won't Back Down" played as President Obama walked onstage at the Democratic National Convention, after former President Bill Clinton's speech. "I got chills," said Petty. "They knew it would be okay. I've had a chance to meet the President and talk to him about the music he listens to."

I can't blame him.