Question: Who wrote classical style music and is known for writing the "Façade" and the First Symphony, Wolfgang Amadeus Mozart or William Walton?

Context paragraphs:
Köchel catalogue: "This is a mostly complete list of the works of Wolfgang Amadeus Mozart, according to the sixth edition of the Köchel catalogue.  For a selective list of his works, grouped by genre, see List of compositions by Wolfgang Amadeus Mozart".

Amadeus (film): Amadeus is a 1984 American period drama film directed by Miloš Forman, adapted by Peter Shaffer from his stage play "Amadeus".  The story, set in Vienna, Austria, during the latter half of the 18th century, is a fictionalized biography of Wolfgang Amadeus Mozart.  Mozart's music is heard extensively in the soundtrack of the movie.  The film follows Italian composer Antonio Salieri at the court of Emperor Joseph II, and his jealous vendetta against his younger rival, Wolfgang Amadeus Mozart.

The Classical Style (opera): The Classical Style: An Opera (of Sorts) is an American comic opera in seven scenes, with music by Steven Stucky and libretto by Jeremy Denk.  The opera was a joint commission from the Aspen Music Festival, Carnegie Hall, the Ojai Music Festival, and Ojai North! , and was premiered under the conductor Robert Spano on June 13, 2014 at the Ojai Music Festival in Ojai, California.  The opera is inspired by the musicologist and pianist Charles Rosen's 1971 book "The Classical Style" and thus follows composers Wolfgang Amadeus Mozart, Joseph Haydn, and Ludwig van Beethoven as they descend from heaven into a modern-day classical music climate.  "The Classical Style" was Stucky's last large-scale composition before his death in 2016.

Wolfgang Amadeus Mozart: Wolfgang Amadeus Mozart ( ; ; ] ; 27 January 1756 – 5 December 1791), baptised as Johannes Chrysostomus Wolfgangus Theophilus Mozart, was a prolific and influential composer of the Classical era.

The Classical Style: The Classical Style: Haydn, Mozart, Beethoven is a book by the American pianist and author Charles Rosen.  The book analyses the evolution of style during the Classical period of classical music as it was developed through the works of Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven.

Franz Xaver Wolfgang Mozart: Franz Xaver Wolfgang Mozart (26 July 1791 – 29 July 1844), also known as Wolfgang Amadeus Mozart, Jr., was the youngest child of six born to Wolfgang Amadeus Mozart and his wife Constanze.  He was the younger of his parents' two surviving children.  He was a composer, pianist, conductor, and teacher from the late classical period whose musical style was of an early Romanticism, heavily influenced by his father's mature style.

Neue Mozart-Ausgabe: The Neue Mozart-Ausgabe (abbreviated as "NMA"; in English, "New Mozart Edition") is the second complete works edition of the music of Wolfgang Amadeus Mozart.  A longer and more formal title for the edition is "Wolfgang Amadeus Mozart.  Neue Ausgabe sämtlicher Werke."

Peter Hänsel: Peter Hänsel (born 29 November 1770 in Leppe, Silesia Province; d. 18 September 1831 in Vienna) was a German-Austrian violinist and classical composer of almost exclusively chamber music.  He has been recently viewed not only as the principal representative of the true quartet school of Joseph Haydn and Wolfgang Amadeus Mozart, but also the composer responsible for incorporating French and Polish influences into the Viennese classical style, thus serving as mediator between Germany, France and Poland.

List of symphonies by Wolfgang Amadeus Mozart: This is a list of symphonies by the classical composer Wolfgang Amadeus Mozart.  Symphonies No.  2 (attributed to Leopold Mozart) and 3 (written by Carl Friedrich Abel) are spurious.  Spurious symphonies can be found at Mozart symphonies of spurious or doubtful authenticity.  Symphonies that are suspected to be not Mozart's, but have not been proven to be the work of another composer, are in this list.  Mozart's "37th symphony" is actually Michael Haydn's 25th symphony; Mozart only added a 20-bar slow introduction to it.

William Walton: Sir William Turner Walton, OM (29 March 19028 March 1983) was an English composer.  During a sixty-year career, he wrote music in several classical genres and styles, from film scores to opera.  His best-known works include "Façade", the cantata "Belshazzar's Feast", the Viola Concerto and the First Symphony.

Supporting paragraphs: Wolfgang Amadeus Mozart William Walton
Answer: Sir William Turner Walton