->People want laughter when they see a show.
->The last thing they're after's litany of woe.
-->-- "Keep it Gay" - ''Film/TheProducers''

People who are attempting to get a big break with a musical that they are involved in, usually in a writing capacity, are often advised that they should do something funny, or light at the very least, because SeriousBusiness doesn't sell without a creator's reputation to give people an incentive to go.

Contrast TrueArtIsAngsty, which reigns supreme in most other media (including non-musical theatre).

Compare WhatDoYouMeanItsForKids, when material aimed at children is criticised for being too dark.

[[WMG: Shows that have succeeded as a result of this trope]]
* ''Theatre/JosephAndTheAmazingTechnicolorDreamcoat'': Even though it was originally a school play, it did give Creator/AndrewLloydWebber and Creator/TimRice a springboard that they used when writing ''Theatre/JesusChristSuperstar''. That success lay in rejuvenating old material, although ''JCS'' was arguably more ''accessible'' than ''funny'', as ''Joseph'' was.

[[WMG: Shows that have flopped as a result of this trope]]
* ''Dance a Little Closer'', Alan Jay Lerner's final musical, was a SettingUpdate of the popular 1936 play ''Idiot's Delight''...meaning it was a musical {{Dramedy}} set on the eve of ''WorldWarIII'' (or, as the script described it, "the avoidable future") rather than the then-brewing World War II. As the Cold War was getting rather hot in 1983, the premise was a [[AudienceAlienatingPremise massive turnoff to audiences]] and it only lasted one official performance.

[[WMG: Notable Aversions]]
* ''Theatre/LesMiserables'': If [[ExactlyWhatItSaysOnTheTin the name didn't give it away]]: [[PluckyComicRelief Thenardiers aside]], this is probably the number one aversion. The professional reviews of its debut bashed it for being far too gloomy, claiming ItWillNeverCatchOn. Word of mouth from the ''rest'' of the audience, however...
* ''Theatre/{{Parade|1998}}'' It's been jokingly referred to as "everybody's favorite lynching musical" written by "nebbish Jewish guys about a nebbish Jewish guy".
* ''Theatre/{{Elisabeth}}'': Even the sweet, innocent songs at the beginning ("Wie Du", for example) have horribly dark reprises later. To think of it that way, there are no happy or lighthearted songs in the entire musical — the happiest moment is when the title character [[spoiler: gets stabbed to death.]] Rudolf's interactions with Death can be played as sweet and paternal (with the child version) and seductive (with the adult version), but both become horrifying as the audience remembers that it's ''Death himself'' that seems to, or at least pretends to, care about the prince. Some Rudolfs even break into wide smiles [[spoiler:right before he shoots himself in the head, finding happiness through being DrivenToSuicide]]. It's a TraumaCongaLine that also [[ForegoneConclusion happened in real life]], and it's become a CashCowFranchise for the European theatre world, and a perennial favorite of Creator/TakarazukaRevue.
* Inverted in-universe in ''Film/FindingNeverland'': James' producer thinks theater-goers will pay to see only serious works, and thinks the idea of a fanciful play about children is ridiculous. The aversion is somewhat justified, in that James has to bring orphans to the play to laugh at it in order to get the adults to be receptive.
* ''Theatre/NextToNormal'': Drugs are an integral part of the plotline, the protagonist has spent years suffering from a mental illness, and the only member of her family who isn't affected by this [[spoiler:is the hallucinatory version of someone who's been dead for years]].
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