Johnny Mathis (born in Gilmer, Texas, September 30, 1935) is an American singer of popular music. Mathis performed "Never Before, Never Again" with Rowlf the Dog on the 1979 TV special The Muppets Go Hollywood. He performed two Christmas songs on the 1992 special Holiday Greetings from The Ed Sullivan Show, which also featured the Muppets, and made a special cameo appearance in Muppets Tonight episode 212.