paragraph_text: Schenk was born in Wiener Neustadt. While still a boy he composed songs, dances and symphonies, and became a proficient violinist and keyboard and wind instrument player. In 1773 he went to Vienna to study with Georg Christoph Wagenseil. Beginning in 1777 he was composing religious works for Saint Stephen's Cathedral. In the 1780s he became a prolific composer of incidental music for plays and singspiele. His best-known singspiel is "Der Dorfbarbier", which premiered in 1796. His other compositions include numerous cantatas, ten symphonies, several concertos (including a well-known one for harp), and five string quartets. Mozart was a good friend of Schenk and Beethoven studied under him in 1793.

paragraph_text: Wolfgang Amadeus Mozart was born on 27January 1756 to Leopold Mozart (1719–1787) and Anna Maria, née Pertl (1720–1778), at 9 Getreidegasse in Salzburg. This was the capital of the Archbishopric of Salzburg, an ecclesiastic principality in what is now Austria, then part of the Holy Roman Empire. He was the youngest of seven children, five of whom died in infancy. His elder sister was Maria Anna Mozart (1751–1829), nicknamed "Nannerl". Mozart was baptised the day after his birth, at St. Rupert's Cathedral in Salzburg. The baptismal record gives his name in Latinized form, as "Joannes Chrysostomus Wolfgangus Theophilus Mozart". He generally called himself "Wolfgang Amadè Mozart" as an adult, but his name had many variants.

paragraph_text: Timothy Eddy is an American cellist from Exeter, New Hampshire who is a founder of Orion String Quartet and a resident of the Mannes College The New School for Music. Since 1978 he is a member of Bach Aria Group and is a former member of Galimir String Quartet of New York Philomusica Chamber Ensemble. He is also a winner of numerous competitions such as the 1975 Cassado International Violoncello Competition, Dealy Competition and Denver Symphony Guild.

paragraph_text: The Amadeus Quartet was a world-famous string quartet founded in 1947 and disbanded in 1987, remarkable for having retained its founding members throughout its long history.

paragraph_text: Olivier Greif (3 January 1950, Paris – 13 May 2000, Paris) was a French composer of Polish-Jewish parentage. His father was an Auschwitz survivor, a fact which affected Greif deeply and led him to compose a number of Holocaust-themed works, notably "Todesfuge", and "Lettres de Westerbork", a song cycle which uses letters written by Etty Hillesum . (The composer wanted to use Paul Celan's poem "Todesfuge" in his third string quartet, but found it difficult to set, so kept the title but used Dylan Thomas's "Elegy" instead.)

paragraph_text: Kevin Volans: Hunting:Gathering is a studio album by the Kronos Quartet, containing works by South African composer Kevin Volans composed especially for the quartet.

paragraph_text: Helen Merrill with Strings is the second album by Helen Merrill, featuring the singer fronting a quartet augmented by a string section arranged by Richard Hayman, recorded in 1955 and released on the EmArcy label.

paragraph_text: Alois Reiser (April 6, 1887 - April 4, 1977 in Los Angeles) was an American composer of Czechoslovakian origin. Born in Prague, he came to the United States in 1905. He composed a number of works for orchestra, including two tone poems and two cello concertos; he also wrote chamber music, including string quartets, and the opera "Gobi". He also composed music for films.

paragraph_text: Franz Xaver Pecháček (4 July 1793 in Vienna – 15 September 1840 in Karlsruhe) was an Austrian-German violin virtuoso and composer of Bohemian origin. Besides polonaises, variations, Rondos and potpourris for violin and orchestra, he composed two string quartets and the "Adagio et Polonaise" for clarinet and orchestra.

paragraph_text: 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.

paragraph_text: Wolfgang Amadeus Mozart's String Quartet No. 15 in D minor, K. 421/417b is the second of the Quartets dedicated to Haydn and the only one of the set in a minor key. Though undated in the autograph, it is believed to have been completed in 1783, while his wife Constanze Mozart was in labour with her first child Raimund. Constanze stated that the rising string figures in the second movement corresponded to her cries from the other room.

paragraph_text: Edwin Grasse (13 August 1884 – 8 April 1954) was an American violinist, organist and composer. Among his compositions were orchestral works, including a symphony and a violin concerto, and much chamber music, including a string quartet.

paragraph_text: Joseph Linke (also spelled Joseph Lincke, Josef Linke; 8 June 1783 – 26 March 1837) was a cellist and composer who had a distinguished career in Vienna, as a soloist and as a member of the Schuppanzigh Quartet. He took part in the first performances of string quartets and other chamber works of Ludwig van Beethoven.

paragraph_text: MusiConnects is a non-profit arts education organization, founded by the Boston Public Quartet and based in Boston, Massachusetts. Their mission is to model and teach self-expression, peer leadership and community development through the transformative power of chamber music. MusiConnects is actively working in partnership with Boston public schools to provide free music education to students – in the hopes of also creating a thriving community to unite youth, families, and musicians. The Boston Public quartet is a professional, performing string quartet that regularly gives concerts across the Boston area, in traditional and neighborhood venues alike.

paragraph_text: Vojtěch Matyáš Jírovec (Adalbert Gyrowetz) (20 February 1763 – 19 March 1850) was a Bohemian composer. He mainly wrote instrumental works, with a great production of string quartets and symphonies; his operas and singspiele numbered more than 30, including "Semiramide" (1791), "Der Augenarzt" (1811), and "Robert, oder Die Prüfung" (1815).

paragraph_text: Johannes Brahms's Clarinet Quintet in B minor, Op. 115 was written in 1891 for the clarinettist Richard Mühlfeld. It is scored for a clarinet in A with a string quartet. It has a duration of approximately thirty-five minutes.

paragraph_text: Wolfgang Amadeus Mozart's String Quartet No. 18 in A major, K. 464, the fifth of the Quartets dedicated to Haydn, was completed in 1785. Mozart's autograph catalogue states as the date of composition ""1785. / the 10th January"". It is in four movements:

paragraph_text: Franz Joseph Haydn (; German: [ˈfʁants ˈjoːzɛf ˈhaɪdn̩] (listen); 31 March 1732 – 31 May 1809) was an Austrian composer of the Classical period. He was instrumental in the development of chamber music such as the piano trio. His contributions to musical form have earned him the epithets "Father of the Symphony" and "Father of the String Quartet".Haydn spent much of his career as a court musician for the wealthy Esterházy family at their remote estate. Until the later part of his life, this isolated him from other composers and trends in music so that he was, as he put it, "forced to become original". Yet his music circulated widely, and for much of his career he was the most celebrated composer in Europe.

paragraph_text: Giuseppe Verdi's String Quartet in E minor was written in the spring of 1873 during a production of "Aida" in Naples. It is the only surviving chamber music work in Verdi's catalogue.

paragraph_text: Maurice Bolyer (December 1, 1920 – August 18, 1978), born Maurice Beaulieu, was a composer and musician known as "Canada's King of the Banjo". Although proficient in a variety of string instruments and piano, he is best known for his work on the banjo.

Question: Who was the dad of the composer of String Quartet No. 18?
Answer: Leopold Mozart