"All Singing, All Dancing" is the eleventh episode of Season 9.
Anticipating a bloody Clint Eastwood-Lee Marvin shoot-'em-up, Bart and Homer are horrified to discover that their video rental, Paint Your Wagon, is actually a musical. Several song and dance moments from seasons past are recalled.
As Snake holds the Simpson family hostage at gun point, Marge and Homer sing begging him to spare the kids. Snake then sings that for hostage purposes they're too weird and leaves. After Snake leaves, Lisa sings about many other spring fielders singing. This leads to clips of them and Apu singing the Kwik E Mart song in Homer and Apu, Krusty and Sideshow Mel singing their version of Send in the Clowns in Krusty Gets Kancelled and her and Bart watching Mr. Burns sing See My Vest in Two Dozen and One Greyhounds. Suddenly Snake returns through the window, singing that he got annoyed with their music from his first visit and plans to kill them all for getting a song stuck in his head. Homer then says he should have shut the window.
Snake prepares to shoot the Simpsons but had no bullets so he left again to get ammo. The Simpsons continue singing, causing a look back at three more musical numbers. Lyle Lanley singing The Monorail Song in Marge vs. the Monorail, the Springfield citizens singing "In the Garden of Eden" by I. Ron Butterfly (really In-A-Gadda-Da-Vida by Iron Butterfly) in Bart Sells His Soul and Homer and the Stonecutters singing We Do in Homer the Great. Homer sings he's finally convinced when Snake hops through the window once more and starts singing that he's finally going to kill them, but Marge said they were done singing. Snake then told her he had no reason to kill them so he left again. The Simpsons then prepare for dinner while closes the window. While she does this, she hums. Snake having heard, Marge's humming fires a bullet at the window, breaking the glass to which Marge says "Okay! Okay! Sorry!" During the end credits, Snake is heard shooting, causing the theme song to stop, then play very quietly. Snake still hears it, and shoots again. When the Gracie Films logo is seen, he even shoots the music there.