"Que Sera, Sera (Whatever Will Be, Will Be)" is a 1956 song written by Jay Livingston and Ray Evans, and originally written for Doris Day for the Alfred Hitchcock film The Man Who Knew Too Much.
Shakey Sanchez sings a verse of it in episode 119 of The Muppet Show at the end of the opening number, "I've Got You Under My Skin." When the sketch was included on Gonzo Presents Muppet Weird Stuff, he appears in Gonzo's trailer court when the clip ends, singing a little more of the song.