Singer Elton John is set to pay tribute to Liberace at the 2013 Primetime Emmy Awards later this month (Sep13), according to U.S. reports. The Rocket Man hitmaker's performance will mark the first time he has appeared on the U.S. television industry's biggest award night. Behind the Candelabra, the TV movie about Liberace and his lover Scott Thorson played by Michael Douglas and Matt Damon respectively, is nominated for 15 awards. John's musical number will accompany nominees Douglas and Damon when they present during the show, according to E! News.