Buzz·Posted on Nov 26, 2009PS22 Chorus Sings "Run This Town"As Mr. P says, "The PS22 Chorus is the best way to bring in the holiday season."by Matt StoperaBuzzFeed StaffLinkFacebookPinterestTwitterMail View this video on YouTube Here they are singing Jay-Z's "Run This Town" at the Saks Fifth Avenue windows unveiling ceremony.