paragraph_text: Florentina Mallá (14 July 1891 – 7 June 1973) was a Czech composer and pianist. She studied piano with Josef Jiránek at the Prague Conservatory, graduating in 1913 and later studied composition privately with Vítězslav Novák. She suspended her work as a composer during the communist years. Her works include didactic piano compositions, a sonatina and preludium for piano and about fifty songs. She died in Prague.

paragraph_text: Les nuits d'été ("Summer Nights"), Op. 7, is a song cycle by the French composer Hector Berlioz. It is a setting of six poems by Théophile Gautier. The cycle, completed in 1841, was originally for soloist and piano accompaniment. Berlioz orchestrated one of the songs in 1843, and did the same for the other five in 1856. The cycle was neglected for many years, but during the 20th century it became, and has remained, one of the composer's most popular works. The full orchestral version is more frequently performed in concert and on record than the piano original. The theme of the work is the progress of love, from youthful innocence to loss and finally renewal.

paragraph_text: Structures I (1952) and Structures II (1961) are two related works for two pianos, composed by the French composer Pierre Boulez.

paragraph_text: Johanna Senfter was born and died in Oppenheim. From 1895 she studied composition under Iwan Knorr, violin under Adolf Rebner, piano under Karl Friedberg and organ at the Hoch Conservatory in Frankfurt am Main. This gave her a considerable amount of musical training when in 1908 she became a student of Max Reger in Leipzig. She composed nine symphonies, 26 orchestral works and concertos for piano, violin, viola, and cello. Senfter was a masterful composer of fugue. Altogether she left behind 134 works.

paragraph_text: In his native Poland, in France, where he composed most of his works, and beyond, Chopin's music, his status as one of music's earliest superstars, his association (if only indirect) with political insurrection, his love life and his early death have made him, in the public consciousness, a leading symbol of the Romantic era. His works remain popular, and he has been the subject of numerous films and biographies of varying degrees of historical accuracy.

paragraph_text: Constantine Finehouse was born in St. Petersburg, Russia, and attended New England Conservatory, Juilliard and Yale University. His principle teachers included Fredrik Wanger, Natalia Harlap, Herbert Stessin, Jerome Lowenthal, Boris Berman and Bruce Brubaker. Praised by Rhein Main Presse Allgemeine Zeitung for his "interpretations of depth and maturity," Finehouse has performed extensively in the US (including in California, Colorado, Connecticut, Florida, Georgia, Massachusetts, New York, Rhode Island and Washington) and abroad (including in Lausanne, London, Odessa, St. Petersburg and Trieste). His newest album with cellist Sebastian Baverstam features the universally-admired Brahms Sonata No. 1 for piano and cello as well as several new works in the High Romantic style by Boston composer Tony Schemmer. His 2009 solo recording, Backwards Glance [Spice Rack Records 101-01], interweaves music of Johannes Brahms and Richard Beaudoin.

paragraph_text: Disma Fumagalli (born Inzago, 8 September 1826 - died Milan, 9 March 1893) was an Italian composer and teacher of music. He was a graduate of the Milan Conservatory, where he began teaching piano in 1853. He composed more than 300 études for piano, as well as other exercises; he also wrote a concerto for piano and string orchestra.

paragraph_text: "Seasons of Love" is a song from the Broadway musical "Rent", written and composed by Jonathan Larson. The song starts with an ostinato piano motif, which provides the harmonic framework for the cast to sing "Five hundred twenty-five thousand, six hundred minutes" (the number of minutes in a common year [60 minutes × 24 hours × 365 days]). The main instruments used throughout the song are piano, vocals, guitar, organ, bass and drums.

paragraph_text: The International Who's Who in Music is a biographical dictionary and directory originally published by the International Biographical Centre located in Cambridge, England. It contains only biographies of persons living at the time of publication and includes composers, performers, writers, and some music librarians. The biographies included are solicited from the subjects themselves and generally include date and place of birth, contact information as well as biographical background and achievements.

paragraph_text: The work was composed during a journey to Mannheim and Paris in 1777-78. The sonata was completed in a few days in early November 1777. The andante movement is a "portrait" of his pupil Rose Cannabich, the 13-year-old daughter of the Mannheim Kapellmeister Christian Cannabich. Upon reviewing a copy of the manuscript, Mozart's father Leopold wrote that it was "a strange composition. It has something in it of the 'rather artificial' Mannheim style, but so very little that your own good style is not spoilt".

paragraph_text: 920 Biography & genealogy 920 Biography, genealogy, insignia 921 - 928 This range is reserved as an optional location for biographies, which are shelved alphabetically by subject's last name. 929 Genealogy, names, insignia

paragraph_text: Sonata pian' e forte was written by Giovanni Gabrieli, an Italian composer and organist in 1597. This is the earliest known piece of music to call for specific brass instruments.

paragraph_text: Amédée Méreaux (full name Jean-Amédée Lefroid de Méreaux) (Paris, 17 September 1802 – Rouen, 25 April 1874) was a French musicologist, pianist, and composer. He was the author of "Les clavecinistes de 1637 à 1790", written from 1864 to 1867, which had essays on the composers it mentioned. His grandfather, Nicolas-Jean Lefroid de Méreaux (1745–1797), was a composer of operas and oratorios, while his father, Jean-Nicolas Lefroid de Méreaux, was an organist and pianist and was a composer of piano sonatas. He was a friend of Frédéric Chopin.

paragraph_text: Wolfgang Amadeus Mozart's Piano Sonata No. 6 in D major, K. 284 / 205b, (1775) is a sonata in three movements:

paragraph_text: Wolfgang Amadeus Mozart died after a short illness on 5 December 1791, aged 35. His reputation as a composer, already strong during his lifetime, rose rapidly in the years after his death, and he became (as he has remained to this day) one of the most celebrated of all composers.

paragraph_text: Improvisation stands at the centre of Chopin's creative processes. However, this does not imply impulsive rambling: Nicholas Temperley writes that "improvisation is designed for an audience, and its starting-point is that audience's expectations, which include the current conventions of musical form." The works for piano and orchestra, including the two concertos, are held by Temperley to be "merely vehicles for brilliant piano playing ... formally longwinded and extremely conservative". After the piano concertos (which are both early, dating from 1830), Chopin made no attempts at large-scale multi-movement forms, save for his late sonatas for piano and for cello; "instead he achieved near-perfection in pieces of simple general design but subtle and complex cell-structure." Rosen suggests that an important aspect of Chopin's individuality is his flexible handling of the four-bar phrase as a structural unit.

paragraph_text: The Kreutzer Sonata (, ) is a novella by Leo Tolstoy, named after Beethoven's Kreutzer Sonata. The novella was published in 1889, and was promptly censored by the Russian authorities. The work is an argument for the ideal of sexual abstinence and an in-depth first-person description of jealous rage. The main character, Pozdnyshev, relates the events leading up to his killing his wife: in his analysis, the root causes for the deed were the "animal excesses" and "swinish connection" governing the relation between the sexes.

paragraph_text: Ernest R. Kroeger (August 10, 1862 – April 7, 1934) was an American composer. He is mainly known for the pedagogical works he composed for piano; he also taught music in St. Louis, Missouri. Today his papers are held at the Missouri Historical Society.

paragraph_text: Donald James Winslow (1911 – 10 July 2010) was a professor at Boston University in Boston, United States who specialized in the subject of biography.

paragraph_text: Ludwig van Beethoven's Piano Sonata No. 6 in F major, Op. 10, No. 2, was dedicated to the Countess Anne Margarete von Browne, and written from 1796 to 1798.

Question: What was the main subject of biographies of the composer of Piano Sonata No. 7?
Answer: Wolfgang Amadeus Mozart