Question: Which composer did Beethoven regard as the greatest of his contemporaries: Franz Schreker or Luigi Cherubini?

full_context: Document 1: Luigi Cherubini: Luigi Cherubini (] ; 8 or 14 September 1760 – 15 March 1842) was an Italian composer who spent most of his working life in France. His most significant compositions are operas and sacred music. Beethoven regarded Cherubini as the greatest of his contemporaries.
Document 2: Second Viennese School: The Second Viennese School (German: Zweite Wiener Schule, Neue Wiener Schule ) is the group of composers that comprised Arnold Schoenberg and his pupils and close associates in early 20th century Vienna, where he lived and taught, sporadically, between 1903 and 1925. Their music was initially characterized by late-Romantic expanded tonality and later, following Schoenberg's own evolution, a totally chromatic expressionism without firm tonal centre, often referred to as atonality; and later still, Schoenberg's serial twelve-tone technique. Though this common development took place, it neither followed a common time-line nor a cooperative path. Likewise, it was not a direct result of Schoenberg's teaching—which, as his various published textbooks demonstrate, was highly traditional and conservative. Schoenberg's textbooks also reveal that the Second Viennese School spawned not from the development of his serial method, but rather from the influence of his creative example.
Document 3: Arnold Schoenberg: Arnold Franz Walter Schoenberg or Schönberg ( ; ] ; 13 September 187413 July 1951) was an Austrian composer, music theorist, and painter. He was associated with the expressionist movement in German poetry and art, and leader of the Second Viennese School. With the rise of the Nazi Party, Schoenberg's works were labelled degenerate music, because they were modernist, atonal and what even Paul Hindemith called "sonic orgies" and "decadent intellectual efforts". He emigrated to the United States of America in 1934.
Document 4: Franz Schreker: Franz Schreker (originally "Schrecker"; 23 March 1878, Monaco – 21 March 1934, Berlin) was an Austrian composer, conductor, teacher and administrator. Primarily a composer of operas, Schreker developed a style characterized by aesthetic plurality (a mixture of Romanticism, Naturalism, Symbolism, Impressionism, Expressionism and Neue Sachlichkeit), timbral experimentation, strategies of extended tonality and conception of total music theatre into the narrative of 20th-century music.
Document 5: Christoph Willibald Gluck: Christoph Willibald (Ritter von) Gluck (] ; 2 July 1714 – 15 November 1787) was a composer of Italian and French opera in the early classical period. Born in the Upper Palatinate (now part of Germany) and raised in Bohemia, he gained prominence at the Habsburg court at Vienna, where he brought about the practical reform of opera's dramaturgical practices that many intellectuals had been campaigning for over the years. With a series of radical new works in the 1760s, among them "Orfeo ed Euridice" and "Alceste", he broke the stranglehold that Metastasian "opera seria" had enjoyed for much of the century.
Document 6: Franz Schubert: Franz Peter Schubert (] ; 31 January 179719 November 1828) was an Austrian composer.
Document 7: Overture in G major (Cherubini): The Overture in G major by Luigi Cherubini (1760-1842) is an orchestral work written for concert use in early 1815. It is unusual among Cherubini's overtures in that his other, better known overtures (such as those to "Anacreon", "Médée", "Les deux journées" and "Ali Baba"), were intended to introduce stage works. Although born in Italy Cherubini had been living in France since 1784, and had earned world fame through a series of operas composed for the Paris stage. In the first decade of the nineteenth century the vogue for his dramatic works began to wane, and he turned increasingly to sacred music.
Document 8: Prix de Rome cantatas (Berlioz): The French composer Hector Berlioz made four attempts at winning the Prix de Rome music prize, finally succeeding in 1830. As part of the competition, he had to write a cantata to a text set by the examiners. Berlioz's efforts to win the prize are described at length in his "Memoirs". He regarded it as the first stage in his struggle against the musical conservatism represented by the judges, who included established composers such as Luigi Cherubini, François-Adrien Boieldieu and Henri Montan Berton. Berlioz's stay in Italy as a result of winning the prize also had a great influence on later works such as "Benvenuto Cellini" and "Harold en Italie". The composer subsequently destroyed the scores of two cantatas ("Orphée" and "Sardanapale") almost completely and reused music from all four of them in later works. There was a revival of interest in the cantatas in the late 20th century, particularly "La mort de Cléopâtre", which has become a favourite showcase for the soprano and mezzo-soprano voice.
Document 9: Richard Wagner: Wilhelm Richard Wagner ( ; ] ; 22 May 181313 February 1883) was a German composer, theatre director, polemicist, and conductor who is primarily known for his operas (or, as some of his later works were later known, "music dramas"). Unlike most opera composers, Wagner wrote both the libretto and the music for each of his stage works. Initially establishing his reputation as a composer of works in the romantic vein of Weber and Meyerbeer, Wagner revolutionised opera through his concept of the "Gesamtkunstwerk" ("total work of art"), by which he sought to synthesise the poetic, visual, musical and dramatic arts, with music subsidiary to drama. He described this vision in a series of essays published between 1849 and 1852. Wagner realised these ideas most fully in the first half of the four-opera cycle "Der Ring des Nibelungen" ("The Ring of the Nibelung").
Document 10: Ludwig van Beethoven: Ludwig van Beethoven ( , ; ] ; baptised 17 December 177026 March 1827) was a German composer and pianist. A crucial figure in the transition between the Classical and Romantic eras in Western art music, he remains one of the most famous and influential of all composers. His best-known compositions include 9 symphonies, 5 piano concertos, 1 violin concerto, 32 piano sonatas, 16 string quartets, his great Mass the "Missa solemnis", and one opera, "Fidelio".
Document 11: List of Classical-era composers: This is a list of composers of the Classical music era, roughly from 1730 to 1820. Prominent composers of the Classical era include Carl Philipp Emanuel Bach, Johann Stamitz, Joseph Haydn, Johann Christian Bach, Antonio Salieri, Muzio Clementi, Wolfgang Amadeus Mozart and Luigi Boccherini. Prominent composers of both the Classical and early Romantic eras include Ludwig van Beethoven and Franz Schubert.
Document 12: Alexander Scriabin: Alexander Nikolayevich Scriabin ( ; Russian: Алекса́ндр Никола́евич Скря́бин , ] ; 6 January 1872 [O.S. 25 December 1871] – 27 April [O.S. 14 April] 1915 ) was a Russian composer and pianist. Scriabin, who was influenced early in his life by the works of Frédéric Chopin, composed works that are characterised by a highly tonal idiom (these works are associated with his "first stage" of compositional output). Later in his career, independently of Arnold Schoenberg, Scriabin developed a substantially atonal and much more dissonant musical system, which accorded with his personal brand of mysticism. Scriabin was influenced by synesthesia, and associated colours with the various harmonic tones of his atonal scale, while his colour-coded circle of fifths was also influenced by theosophy. He is considered by some to be the main Russian Symbolist composer.
Document 13: Ludwig van Beethoven: Ludwig van Beethoven ( , ; ] ; baptised 17 December 177026 March 1827) was a German composer and pianist. A crucial figure in the transition between the Classical and Romantic eras in Western art music, he remains one of the most famous and influential of all composers. His best-known compositions include 9 symphonies, 5 piano concertos, 1 violin concerto, 32 piano sonatas, 16 string quartets, his great Mass the "Missa solemnis", and one opera, "Fidelio".
Document 14: Fritz Kreisler: Friedrich "Fritz" Kreisler (February2, 1875January29, 1962) was an Austrian-born violinist and composer. One of the most noted violin masters of his day, and regarded as one of the greatest violin masters of all time, he was known for his sweet tone and expressive phrasing. Like many great violinists of his generation, he produced a characteristic sound which was immediately recognizable as his own. Although it derived in many respects from the Franco-Belgian school, his style is nonetheless reminiscent of the "gemütlich" (cozy) lifestyle of pre-war Vienna.
Document 15: Richard Strauss: Richard Georg Strauss (11 June 1864 – 8 September 1949) was a leading German composer of the late Romantic and early modern eras. He is known for his operas, which include "Der Rosenkavalier", "Elektra", "Die Frau ohne Schatten" and "Salome"; his Lieder, especially his "Four Last Songs"; his tone poems, including "Don Juan", "Death and Transfiguration", "Till Eulenspiegel's Merry Pranks", "Also sprach Zarathustra", "Ein Heldenleben", "Symphonia Domestica", and "An Alpine Symphony"; and other instrumental works such as "Metamorphosen" and his Oboe Concerto. Strauss was also a prominent conductor in Western Europe and the Americas, enjoying quasi-celebrity status as his compositions became standards of orchestral and operatic repertoire.
ground_truth: Luigi Cherubini