Panic! At The Disco blew us away at their Pepsi Center show, but they've come a long way and changed a lot since 'Live in Denver' was filmed in 2005.

Long before the arenas and floating pianos, and before Panic! At The Disco was, essentially, a Brendan Urie one-man show (he's literally the only actual remaining member), the band was made up of Urie, Ryan Ross, Spencer Smith and Brent Wilson. On their first headlining tour, they played small venues after the release of 'A Fever You Can't Sweat Out.'

Panic! At The Disco Then

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Panic! At The Disco Now

Kevin Winter/Getty Images

The swoopy-haired, baby-faced band made a behind-the-scenes tour documentary while in Denver 13 years ago. It's been uploaded to YouTube, and you can watch it here.