Question: Who originally wrote an unproduced script that later became an animated movie in which the song "Chanson Illusionist" was featured?

Context paragraphs:
Astro Boy (1963 TV series): Astro Boy (Japanese: 鉄腕アトム , Hepburn: Tetsuwan Atomu , "Mighty Atom", lit.  "Iron Arm Atom") is a Japanese television series that premiered on Fuji TV on New Year's Day and is the first popular animated Japanese television series that embodied the aesthetic that later became familiar worldwide as "anime".  It originated as a manga of the same name in 1952 by Osamu Tezuka, revered in Japan as the "God of Manga."  After enjoying success both in Japan and abroad as the first anime to be broadcast overseas, "Astro Boy" was remade in the 1980s under the same name(s), and in 2003 as "Astro Boy: Mighty Atom".  It lasted for four seasons, with a total of 193 episodes, the final episode presented on New Year's Eve 1966.  At its height it was watched by 40% of the Japanese population who had access to a TV.  In 1964, there was a feature-length animated movie called "Mighty Atom, the Brave in Space" (鉄腕アトム 宇宙の勇者 , Tetsuwan Atomu: Uchū no yūsha ) released in Japan.  It was an anthology of three episodes; "The Robot Spaceship", "Last Day on Earth" and "Earth Defense Squadron".  The latter two were filmed in color.

Street Fighter II: The Animated Movie: Street Fighter II: The Animated Movie, known as Street Fighter II Movie (ストリートファイター II MOVIE , Sutorīto Faitā Tsū Mūbī , not to be confused with the live-action version) in Japan and Australia, is a 1994 anime film adaptation of the "Street Fighter II" fighting game written by Kenichi Imai, directed by Gisaburō Sugii and animated by Group TAC.  The film, originally released in Japan on August 8, 1994, was released theatrically in the United Kingdom, France, and Spain, and was adapted into English in dubbed and subtitled format by Animaze for Manga Entertainment.  It was also distributed by 20th Century Fox in other countries.  Following the film's release, Group TAC later produced a loose adaptation of the "Street Fighter II" game, the anime series "Street Fighter II V".

Kadamba alphabet: The Kadamba script (known as "Pre Old Kannada script") marks the birth of a dedicated script for writing Kannada.  It is a descendant of the Brahmi script, an abugida visually close to the Kalinga alphabet.  The Kadamba script was developed during the reign of the Kadamba dynasty in the 4th-6th centuries.  The Kadamba script is also known as Pre-Old-Kannada script.  This script later became popular in what is today the state of Goa and was used to write Sanskrit, Kannada, Konkani and Marathi.

Superjail!: Superjail!  is an American animated television series produced by Augenblick Studios in its first season, and by Titmouse, Inc. in its second, third, and fourth seasons.  A fourth season was confirmed on the Twitter page of David Wain, who voices the character of the Warden.  The series follows the events that take place in an unusual prison.  The pilot episode aired on television on May 13, 2007, and its first season began on September 28, 2008 on Adult Swim.  "Superjail!"  is characterized by its psychedelic shifts in setting and plot and extreme graphic violence, which give the series a TV-MA-V (for graphic violence, including scenes of bloodshed, dismemberment, torture, and extreme cruelty) rating.  These elements are depicted through highly elaborate animated sequences, which have been described as "Baroque and complicated and hard to take in at a single viewing".  On October 30, 2015, Titmouse confirmed at their panel at Comikaze Expo that "Superjail!"  had been cancelled by drawing it along with previously cancelled shows like "Motorcity", "", and "Metalocalypse".  The series was the creation of Christy Karacas, who was a member of the band Cheeseburger, and also directed "Robotomy" for Cartoon Network, Stephen Warbrick, who was originally a digital artist on MTV's "Celebrity Deathmatch" and was also an animatic artist at Blue Sky Studios, and Ben Gruber, who originally wrote for Ultracity 6060 on MTV's "Cartoon Sushi", and would also later write for shows like "Teen Titans Go! ", "Breadwinners", and "SpongeBob SquarePants".

Someday My Prince Will Come: "Someday My Prince Will Come" is a popular song from Walt Disney's 1937 animated movie "Snow White and the Seven Dwarfs".  It was written by Larry Morey (lyrics) & Frank Churchill (music), and performed by Adriana Caselotti (Snow White's voice in the movie).  It was also featured in the 1979 stage adaptation of the 1937 animated musical movie.  In AFI's 100 Years...100 Songs, it was ranked as the 19th greatest film song of all time.

Eric Guggenheim: Eric Guggenheim (born October 22, 1973) is an American screenwriter.  He graduated from NYU's Tisch School of the Arts in 1995.  Two years later he sold a script, "Trim", to Fox 2000 at age 23.  Following that, he wrote an unproduced drama for Warner Bros. and a one-hour drama pilot for USA Network.  In 2004, Guggenheim wrote the feature film "Miracle".  Guggenheim is currently a writer, executive producer and co-showrunner of the CBS series "Hawaii Five-0".  Before that he spent four seasons as a writer on the NBC series "Parenthood".  His brothers are screenwriters Marc Guggenheim and David Guggenheim.

Chanson Illusionist: "Chanson Illusionist" is a song recorded by French animator and musician Sylvain Chomet for the to the 2010 animated film, "The Illusionist".  It was distributed digitally on 14 December 2010 through Warner Bros.  Records and Milan Records, along with the rest of the parent album.  Chomet wrote the piece while Terry Davies conducted and arranged its production.

Django Films: Django Films is a film studio run by the Oscar nominated French animator Sylvain Chomet.  The studio, named after the jazz guitarist Django Reinhardt, is based in Edinburgh, Chomet's adopted home.  Produced "The Illusionist", based upon a previously unproduced script by Jacques Tati.  Also, "Les Triplettes de Belleville" (80 min – 2003) and "La Vielle Dame et Les Pigeons" (23 min - 1998).  The Django Films studio was set up solely to make this film, and is now being dismantled.

Scooby-Doo! Abracadabra-Doo: Scooby-Doo!  Abracadabra-Doo is a 2010 direct-to-DVD animated comedy horror mystery fantasy film, and the fourteenth entry in a series of direct-to-video animated films based upon the "Scooby-Doo" Saturday morning cartoons.  The film is directed by Spike Brandt and Tony Cervone.  It was produced in 2009 by Warner Bros.  Animation and it was released on February 16, 2010.  It made its television debut on July 10, 2010 on Cartoon Network The movie performed well on iTunes, reaching the Top 10 on the Kids & Family movie charts and the Top 40 on the iTunes movie charts.  The DVD sold 61,341 units in its first week and as of January 2013, it has sold approximately 433,000 units.  This is also the first Scooby-Doo animated movie that featured Matthew Lillard voicing Shaggy Rogers.  The animation is now in a different format, with a darker, more realistic look similar to "Zombie Island", "Witch's Ghost", and the characters are now in their original outfits and designs from the classic original "Where Are You! " series.

The Illusionist (2010 film): The Illusionist (French: L'Illusionniste ) is a 2010 French-British animated film directed by Sylvain Chomet.  The film is based on an unproduced script written by French mime, director and actor Jacques Tati in 1956.  Controversy surrounds Tati's motivation for the script, which was written as a personal letter to his estranged eldest daughter, Helga Marie-Jeanne Schiel in collaboration with his long-term writing partner Henri Marquet, between writing for the films "Mon Oncle" and "Play Time".

Supporting paragraphs: Chanson Illusionist The Illusionist (2010 film)
Answer: Jacques Tati