Watch Katy Perry’s heartwarming duet of "Firework" with 11-year-old Jodi DiPiazza, who was diagnosed with autism at age 2. They two received a standing ovation during Comedy Central’s ‘Night of Too Many Stars’ autism fundraiser. Jodi played piano for the entire song and joined Katy on vocals.

The event, hosted by John Stewart, airs on Comedy Central on Sunday, Oct. 21st and features dozens of celebrity appearances and performances to raise money for autism programs.