Musical numbers performed in backstage locations of The Muppet Theatre or other locales, rather than on the theater stage.
- Valerie Harper sings "Broadway Baby" backstage (episode 120)
- The Electric Mayhem performs "Fugue for Frog" backstage. Unlike many other instances of musical performances taking place backstage, this is more of a song being auditioned as the new theme song (episode 123)
- Steve Martin and the jugband play "Dueling Banjos" in the auditorium (episode 208)
- Gonzo sings "Wishing Song" backstage (episode 209)
- Bernadette Peters and the Muppets sing "Just One Person" in the guest star's dressing room (episode 212)
- Elton John sings "Bennie and the Jets" in the guest star's dressing room (episode 214)
- A group of monsters sing "Once a Year Day" (episode 307)
- The entire show - including on-platform performances of "You're Lookin' at Country," "All Alone," "Oh, Lonesome Me," "The Rhyming Song," and "One's on the Way" - takes place at a railway station; additionally, Gonzo sings "Sentimental Journey" to Kermit while they travel by hand car to the station. (episode 308)
- Danny Kaye sings "The Inch Worm" backstage (episode 316)
- Anne Murray and the Electric Mayhem perform "Walk Right Back" in the guest star's dressing room (episode 415)
- Gene Kelly, Miss Piggy and Gonzo sing "You Wonderful You" by the Stage Door (episode 501)
- Later, Kelly and the Muppets sing a medley of songs ending with "Singin' in the Rain" (episode 501)
- Shirley Bassey sings "Pennies from Heaven" in her dressing room (episode 504)
- Debbie Harry, Kermit and the Frog Scouts sing "Rainbow Connection" in her dressing room (episode 509)
- Paul Simon sings "Long, Long Day" in his dressing room (episode 511)
- Hal Linden and Robin sing "If I Ruled the World" in his dressing room (episode 517)
- Buddy Rich and Beauregard sing "You Mustn't Feel Discouraged" in his dressing room (episode 522)
- Linda Ronstadt, Janice and the Female Singers sing "It's in His Kiss" in her dressing room (episode 523)
Fragments[]
Numbers that begin backstage before being performed on-stage.