Chalkboard Gag: I will not instigate revolution

Couch Gag: The family rushes in and crams onto the couch. Maggie pops into the air, landing in Marge's arms.

A longer version of Lisa's song appeared on the Simpsons Sing The Blues CD.

This episode marks the first time we see "Bleeding Gums" Murphy.

The two video boxers look just like Bart and Homer.

This episode also introduces Mr. Largo, the band teacher.

The arcade games are: Time Waster, Freeway, Pac-Rat, Eat My Shorts, Nuclear Disaster, Robert Goulet Destroyer, Escape from Grandma's House, Itchy and Scratchy.

Bleeding Gums Murphy: You know you play pretty well for someone with no real problems.

Bart: Is Jacques there?
Moe: Who?
Bart: Jacques, last name Strap.
Moe: Hold on. Jacques Strap! Hey guys, I'm looking for a Jacques Strap!

(Lisa and Bleeding Gums Murphy have a little jam session)
(Lisa plays a jazz tune on her sax)
Bleeding Gums Murphy: Now, now low b-flat.
(Lisa plays some lower notes on her sax)
Bleeding Gums Murphy: Okay, Lisa. "Altissimo" register.
(Lisa plays very high notes on her sax)
Bleeding Gums Murphy: Very nice. Very nice. I once ruptured myself doin' that.
Lisa: Thanks, Mr. Murphy
Bleeding Gums Murphy: My friends call me Bleedin' Gums.
Lisa: Eww. How'd you get a name like that?
Bleeding Gums Murphy: Well, let me put it this way. You ever been to the dentist?
Lisa: Yeah.
Bleeding Gums Murphy: Not me. I suppose I should go to one, but I got enough pain in my life as it is.

Homer: Where the hell are my keys? Who stole my keys? Come on, I'm late for work! (Lifts Maggie and looks underneath)
Marge: Oh Homer, you'd lose your head if it weren't securely fastened to your neck.
Bart: Did you check the den?
Homer: The den! Great idea!
(Homer heads into the den with Bart following him and Homer begins to pull couch apart.)
Bart: Warm. No, cold. Colder. Ice cold.
Homer: You know where my keys are?
Bart: No, I'm talking about your breakfast. (Laughs)
Homer: (Growls)

(Bart prank calls Moe's Tavern)
Moe: Yeah. Moe's Tavern. Moe speaking.
Bart: Is Jacques there?
Moe: Who?
Bart: Jacques. Last name Strap.
Moe: Uh, hold on. (Calling out) Uh, Jacques Strap! Hey, guys, I'm lookin' for a Jacques Strap!
(The entire bar laughs at Moe)
Moe: What? Aw, wait a minute, Jacques Strap? It's you isn't it, you cowardly little runt! When I get a hold of you, I am gonna gut you like a fish and drink your blood.
(Bart laughs in the background)

The second time Homer and Bart are playing video games, there is a shot of Homer mashing away at his controller, however the button is on the opposite side from his thumb.

Homer comes through the closet door when he tells off Lisa for distracting him.

Mona Lisa

The title Moaning Lisa is a spoof on the famous painting Mona Lisa by Leonardo da Vinci. Read more about the painting at the wikipedia page.

"Blind" Lemon Jefferson

Bleeding Gums Murphy is most likely based on the famous blues musician.