Mr. B Natural

Mr. B Natural is a short sponsored film produced in 1956 by Kling Film Productions for the C.G. Conn Company, directed by Phil Patton. It is also the name of the film's main character, played by Betty Luster.
The short was intended to be shown in classrooms and school assemblies to advertise Conn's line of musical instruments for American school bands. It fell into obscurity until it was satirized in an episode of "Mystery Science Theater 3000" that first aired on November 30, 1991, after which it was celebrated as a prime example of period kitsch.
Titular character.
Mr. B Natural is an androgynous figure, a "hep pixie" who is meant to embody the "spirit of fun in music". In this capacity, the character inspires children to take up band instruments. The name is a pun on the musical notation B♮ (B natural), as the character explains: "that's what your feelings of music are, as natural as you can be." The nickname of Billy Eckstine, a highly popular singer and bandleader at the time, was "Mr. B."
The character also acts as a kind of nascent brand mascot for C.G. Conn musical instruments, though Mr. B Natural made no appearances for the company beyond the one film.
Conn provided details about the film in the Spring 1957 issue of their magazine, "The Baton", distributed to public school music teachers: "Mr. B Natural is the spirit of music in everyone...a sort of LepreCONN who is always no more than an inch away from the fingertips of anyone. Mr. B has a code however, that prohibits him from showing himself for anyone unless he reaches out and calls for the spirit of music. In full color, Mr. B Natural entertainingly answers the call of Buzz, a shy, reticent teen-ager and for twenty-six minutes and forty seconds explains how music and playing a musical instrument will help develop posture, breathing, self-confidence, coordination and in general a young person's character. Mr. B gives both youthful and adult audiences ease to take instruction in the values of music. The Film is being made available by the Band Instrument Division of Conn through Conn dealers everywhere."
In captions for the productions photos included in the three-page essay, the title character is consistently referred to as "he", an indication that Conn intended Mr. B to be of the male gender. However, in an instance of reverse-gender casting similar to the casting of Mary Martin as Peter Pan ("Mary Martin syndrome" as Kevin Murphy said when writing about his experiences with the short film), the role was cast with an actress, Betty Luster, who had been a television musical variety star only a few years before.
Plot.
The action opens upon the musical staff in which Mr. B Natural lives. Mr. B addresses the audience directly, in an effort to appear welcoming, and explains what it means to be a spirit of music. Awaiting a person's call for help, Mr. B evinces sympathy and concern for lonely junior high student Buzz Turner.
Buzz shows an interest in music like the more popular kids at school, but is so shy that he makes excuses to not attend a dance, even when a girl directly invites him. Dejected, Buzz returns home and puts on a record. This magically summons Mr. B into the adolescent boy's bedroom, whereupon the pixie uses magic, music and dance to convince Buzz to take up playing the trumpet.
In visiting the music dealership, Buzz's parents are reassured by the salesman that buying a trumpet is "simply making a small investment in your son's lifetime personality." When Buzz mentions that he didn't care what make his new horn would be, he is reproached by Mr. B Natural, and is treated to a detailed description of the C. G. Conn factory and laboratories.
Through the gift of music and the help of his mysterious friend, Buzz finds the confidence and assertiveness he needs to try out for the school band, impress girls, and play solo at concerts and school dances.
Production.
"Mr. B Natural" was produced by Kling Film Productions, an industrial film producer based out of Chicago, Illinois. The film's sponsor, C.G. Conn, was introducing its new line of "Connstellation" brass instruments in the mid-1950s, which may explain the emphasis on these instruments in the storyline.
Shooting took place in 1956, on 16mm in Technicolor. Which sound stages were used for the production is not known, but the school grounds of Waukegan Elementary School in Illinois and Miami Sr. High School in Florida were used for location shots. Footage of workers at a C.G. Conn plant also appears.
"Mystery Science Theater 3000".
Rediscovery.
In 1991, HBO sought content for its new network, Comedy Central, and employed "ephemeral film" expert Rick Prelinger to locate amusing vintage footage. "Mr. B Natural" was not held in Prelinger's collection, but was licensed for use in "Mystery Science Theater 3000 (MST3K)" from Streamline Film Archives, now F.I.L.M. Archives. F.I.L.M. Archives is the only known holder of this film print today, archived as reel #1133B.
Spoof.
"Mr. B Natural" was featured on "MST3K" as part of episode #319, preceding the film "War of the Colossal Beast", which first aired November 30, 1991. It is celebrated by fans and critics alike as one of the most memorable shorts ever satirized by the show.
In "MST3K's" revisiting of the short, Joel Robinson and the bots mock Mr. B's gender ambiguity and seemingly sinister interest in Buzz. They also pick up on a candid comment of Mr. B Natural, "don't be too sure I wasn't in the Garden with Mr. and Mrs. Adam," making the obvious connection that Adam and Eve's only companion in Eden mentioned in the Genesis story was the serpent. When Mr. B Natural starts a series of bizarre dances, Crow moans "Oh, my God, please say this isn't happening!" while Tom intones "Ladies and gentlemen, please accept our sincere apologies for all of this." Following the short, Joel moderates a mock-serious debate between Crow T. Robot and Tom Servo as to whether Mr. B Natural is a man or a woman. At the end of the film, the trio sing “We’re really white” to the tune of the band playing.
Running joke.
The short was later referenced many times during the show's run. Examples include:
Mr. B was recreated by Bridget Jones in the live broadcast "Turkey Day" host segments of episode #701T "Night of the Blood Beast", on November 23, 1995. Jones's Mr. B has arrived on the show to celebrate Thanksgiving, but becomes the focus of the unwelcome affections of another guest, a drunken Jack Perkins, played by Jones' real-life husband Michael J. Nelson.
RiffTrax.
In 2013, RiffTrax, a comedy website that features three of the stars of "Mystery Science Theater 3000" (Michael J. Nelson, Bill Corbett, and Kevin Murphy), wrote and performed an all-new commentary track for "Mr. B Natural." The resulting film with commentary track was released to some sponsors of their Kickstarter crowd-funded campaign. Unlike the truncated MST3K version, the RiffTrax version is a nearly unedited 26 minutes, 7 seconds.