Katy Perry joined Jodi DiPiazzza, an 11-year-old girl with autism, on stage at Comedy Central's Night of Too Many Stars.  The duo performed a duet of Katy's song, Firework.

Jodi played piano and sang with the popstar.  She was diagnosed with autism at age 2.  More can found about Jodi here.

The duet will air on Comedy Central Sunday, October 21 at 8 PM.  The event plans to raise money for autism programs.  The video of the duet is below.  It will pull at your heart strings.