Lisa's Sax
It is during discussions of Bart's future that the school psychologist realizes the young Lisa is very intelligent, telling Homer and Marge that they need to nurture her gifted spirit.
In the present, Marge mentions that there is some money in the air conditioner account, so Homer decides to buy another saxophone for Lisa.
[5] The episode was originally very short, so the montage of Lisa playing the sax at the end was added to pad it out,[5] and the full intro is used.
The pastel drawing of Krusty was drawn entirely by Dominic Polcino, who revealed it was the only piece of original artwork created solely by him that was featured in an episode.
It would also mark the final time the character would speak until Season 18's "The Mook, the Chef, the Wife and Her Homer" when she was voiced by Tress MacNeille.
[7] While telling Bart and Lisa about 1990, Homer says, "Tracey Ullman was entertaining America with [...] crudely drawn filler material."
[8] At the end of the episode, Lisa performs a brief, cruder rendition of the hook of "Baker Street" by Gerry Rafferty on her new saxophone before the music segues into the original song.
[9] The authors of the book I Can't Believe It's a Bigger and Better Updated Unofficial Simpsons Guide, Warren Martyn and Adrian Wood, called it "a terrific episode, full of amusing self-referential wit and it is especially nice to finally discover what it was that caused Bart to go down the path to the dark side.
"[10] A review of The Simpsons season 9 DVD release in The San Diego Union-Tribune highlighted "Lisa's Sax" along with "All Singing, All Dancing" and "Trash of the Titans" as some of the more memorable episodes of the series.
[12] A segment of the episode where two schoolgirls chant the digits of pi while playing patty-cake is used by mathematicians Sarah J. Greenwald of Appalachian State University and Andrew Nestler of Santa Monica College in a website on the mathematics of The Simpsons.
