I ran across this video a few days ago on Facebook.
It features Katy Perry and Jodi DiPiazza sing "Firework" at the Beacon Theater in New York - "Night of Too Many Stars: America Comes Together for Autism Programs" hosted by Jon Stewart. The event, held on Oct. 21, was designed to raise money for autism programs, schools, and services all over the country.
The video tells DiPiazza's story of how music has helped her. It then segues, showing DiPiazza playing "Firework" on the stage, with Perry joining her.
Frankly, I was just really impressed by Perry's actions. It was just awesome - and too good, not to share.
You can see more highlights from the show at http://www.youtube.com/playlist?list=PLD7nPL1U-R5oQRBMDHXwFM1srbI-Smmqm