Editing 500 Keys/References

{{tabR|episode=500 Keys}}
== Cultural References ==
*When [[Lisa]] finds the hidden classroom:
**She observes that the stage is set for a production of the play ''{{w|Endgame (play|Endgame}}'' by {{w|Samuel Beckett}}.
**Lisa discovers that the objects in the classroom appear real, but are revealed to be fakes on closer inspection. Near the end of ''{{w|2001: A Space Odyssey (film)|2001: A Space Odyssey}}'' astroanut David Bowman finds himself in a similarly fabricated hotel room.
**Lisa returns to the classroom with a huge crowd and school newspaper reporters in tow, only to find nothing but bookshelves, similar to the {{w|Geraldo Rivera}} special ''{{w|The Mystery of Al Capone's Vaults}}'', where after a huge media buildup the vault was anticlimactically discovered to be empty except for dirt and debris.
*When [[Bart]] gets onto the window washing platform, the music playing is an {{w|Inversion (music)|inversion}} of the title theme from ''{{w|Peter and the Wolf}}''.
*During the blimp pursuit ([[Chief Wiggum]] and [[Lou]] in the [[Springfield Police Department]] blimp chasing [[Homer]] in the [[Duff Beer]] blimp:
**Homer eludes Wiggum by suddenly climbing and flying over a billboard advertising a {{w|Cirque du Soleil}} performance titled "Zoomanity".
**Wiggum crashes into the billboard and cries "Oh, the zoomanity!" as his blimp catches fire, referencing the {{w|Hindenburg disaster}}.

== Trivia ==
*The [[Chalkboard Gag|chalkboard gag]] is a reference to [[Kristen Schaal]]'s name being misspelled as "Kristen Schall" in the closing credits of "[[Homer Scissorhands]]".
*In the band room scene of the [[Opening Sequence|opening sequence]], [[Lisa]] plays a violin instead of her saxophone.
{{Season 22 R}}