[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/luster_2900.jpg]]
[[caption-width-right:350:''"Knew your father, I did!"''[[note]]Hey, leave my father outta this![[/note]]]]

''Mr. B Natural'' is an advertising short about a mysterious Franchise/PeterPan-esque pixie who helps Buzz, a lonely young kid, learn how to make friends and express himself through music (and hence, genuine Conn[[TradeSnark ™]][[note]]Now Conn-Selmer, Inc.[[/note]] instruments).

''Series/MysteryScienceTheater3000'' has riffed on this twice - for the original version, please go to the [[Recap/MysteryScienceTheater3000S03E19WarOfTheColossalBeast episode recap page]]; it was riffed again in the 2023 Winter Festival of Shorts.

Podcast/RiffTrax also did its own commentary using a complete, unblemished copy of the short; the ''[=MST3K=]'' version had broken splices.

The entire uncut and unriffed short can be viewed [[https://www.youtube.com/watch?v=NdCrV14l658 here]].

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!!This short provides examples of:
* AchievementsInIgnorance: Alluded to when Mr. B mentions an 8-year-old who's learning the French horn; due to being so young, the child was not intimidated by the instrument's apparent learning curve and mastered it quickly.
-->'''Mr. B:''' Wait till he grows up and finds out how hard it really is!
* AnAesop: For all its goofiness and commercial praise of Conn instruments, the short does spend most of its time emphasizing the importance of musical education, even if it does exaggerate just how good it is.
* AmbiguousGender: Possibly what they were shooting for with Mr. B, given that he's the living incarnation of music itself.
* AmbiguouslyGay: Mr. B Natural would be CampGay if it was even clear he's really a ''male''.
* AnthropomorphicPersonification: Mr. B Natural is the living embodiment of music, and represents "the spirit of music in you [[LeaningOnTheFourthWall AND you]]!"
* AsHimself: Bruce Podewell and his parents played themselves.
* BeYourself: Mr B encourages Buzz to run with his desire to learn how to play music and not worry about whether or not he'll be any good.
%%* {{Bifauxnen}}: Mr. B.
* CrosscastRole: Mr. B. is clearly not played by a man.
* CuteButCacophonic: Mr. B has a high-pitched voice. '''Very''' high-pitched, in fact. It's probably not even Betty Luster's [[{{Pun}} natural]] voice, [[{{Irony}} for that matter]].
* EnterStageWindow: In the uncut short, Mr. B, after visiting Buzz for the first time, leaves his room by jumping head first out of his bedroom window.
* {{Expy}}: Mr. B is an expy of Franchise/PeterPan.
%%* FairyCompanion
* FamousAncestor: Mr. B claims to be related to all musical instruments, and, is (one assumes) also family to all the other notes.
* {{Flight}}: At one point Mr B flings themself out a window, and Buzz's reaction indicates that he sees them flying off.
* GenkiGuy: Mr. B is very ''very'' perky.
* HurricaneOfPuns: All the "be natural" puns.
* ImaginaryFriend: Basically? Mr. B claims to be Buzz's personal spirit of music, who awakened when Buzz reached out to play a record in order to make himself feel better. As such, such one else can see or interact with them. The implication is that ''everyone'' has a Mr. B Natural of their own. However, since ''this'' Mr. B claims to have helped another child, there may be some kind of HiveMind going on.
* LegFocus: Mr. B has a few odd shots showing off her legs as she stands or sits, though the actress was a dancer, so it makes some sense.
* MeaningfulName: "Be Natural". Also serves as a DoubleEntendre, as she's the embodiment of the B♮ musical note.
* MerchandiseDriven: It is a promotional short for Conn band instruments. In case the marching band spelling out the company's name behind the opening credits was too subtle an advertisement, the short's final third drops all pretenses of being anything but a commercial and leaves the characters behind to show off the company's manufacturing process.
* MundaneMadeAwesome: Probably the only place you'll ever see high-schoolers marvelling over new band instruments. "Wow!"
-->'''Fred:''' ''(turning down a date with a cute girl)'' Not me, Jeannie! Band practice! I wouldn't miss it for anything! I'm bucking for first clarinet chair![[invoked]]
* {{Shapeshifter}}: Mr. B can assume the form of a note...or is a note assuming humanoid form?
* ShoutOut: The short is deliberately trying to emulate the ''Theatre/{{Peter Pan|1954}}'' stage play.
* SpontaneousWeaponCreation: Mr. B can make musical instruments appear out of thin air. Buzz still has to pay for his own trumpet, though.
* StopTrick: Whenever Mr. B pops in and out of view.
* StrangeSyntaxSpeaker: This is nowhere near constant, but Mr. B says two things like Yoda: "Knew your father, I did!" and, "Taught him how to play the French horn, I did!"
%%* SweetPollyOliver
* {{Telepathy}}: In the full short, Mr. B reveals s/he can read minds.
* {{Teleportation}}: First shown when Mr. B suddenly appears in Buzz's locker, then in his room.
* TotallyRadical: According to the short's log line, Mr. B is a "hep pixie".
* VocalDissonance: For such a hot... person, Mr. B has a screechy, high-pitched, constantly fluctuating, harpy scream of a voice; described as "a shrill, peculiar succubus" in The Amazing Colossal Mystery Science Theatre Episode Guide.
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