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"Get the tissues ready!\r\nOn Comedy Central&amp;apos;s Night of Too Many Stars (previously recorded on Oct. 13), Katy Perry sang a moving duet with a young autistic girl, Jodi DiPiazza. The talented young musician began performing the pop star&amp;apos;s hit song, &amp;quot;Firework,&amp;quot; while playing the piano.&amp;#xA0;\r\n\r\nShortly into the song, Perry, 27, joined DiPiazza on stage. The duet moved host Jon Stewart to tears and earned a standing ovation from the audience.\r\n&amp;quot;It&amp;apos;s the most beautiful thing I&amp;apos;ve ever been associated with,&amp;quot; said the comedian Robert Smigel, who produces Night of Too Many Stars, to the Associated Press. &amp;quot;I&amp;apos;ve made a career of all this nonsense -- and I&amp;apos;m very proud of it -- but it all pales in comparison to what happened Saturday.&amp;quot;\r\n\r\nAfter the show, Perry tweeted, &amp;quot;I will never forget last night. It was the most important moment thus far of what I do.&amp;quot;&amp;#xA0;\r\n\r\nWatch the touching video above. Night of Too Many Stars airs Sunday, Oct. 21 at 8:00 EST on Comedy Central."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.usmagazine.com/entertainment/news/katy-perry-performs-firework-with-young-autistic-fan-jodi-dipiazza-20121810>