In the late '70s, 14-year-old Griffin Black wasn't even born yet. But "Refugee," the Tom Petty and the Heartbreakers 1979 tune, is his favorite song. In fact, while most his friends would rather listen to hip-hop, the Heartbreakers are his favorite band.

So it's not uncommon for Black to watch old Tom Petty videos on YouTube. One night in front of the computer, Griffin was watching footage of a 1985 concert.