1804 in music

This is a list of music-related events in 1804.

• January 1 – Johann Nepomuk Hummel's Concerto for trumpet and orchestra receives its première in Vienna, in the presence of Nicholas II, Prince Esterházy.^[1]
• January 23 – François-Adrien Boieldieu becomes musical director at the court of Tsar Alexander I of Russia.^[1]
• February 20 – Giovanni Paisiello is appointed Maestro di Cappella at Naples.^[1]
• April 22 – Twelve-year-old Gioachino Rossini gives a concert at Imola.^[1]
• May 8 – Seventeen-year-old Carl Maria von Weber becomes Kapellmeister at Breslau in Silesia.^[1]
• May 14 – Napoleon proclaims himself emperor, causing Beethoven to tear up the title page of his recently completed Symphony No. 3 and rename it the Eroica.^[2]
• September 18 – Composer Muzio Clementi marries 19-year-old pianist Caroline Lehmann, the daughter of Johann Georg Lehmann, director of the Royal Opera, Berlin.^[1] There is a 33-year age gap between bride and groom.
• Nicolas Dalayrac is awarded the Légion d'honneur.^[1]

• Ludwig van Beethoven
  • Piano Sonata No. 22 in F major
  • Piano Sonata No. 23, Op.57
  • Symphony No. 2 (published; composed 1801–02)
  • Triple Concerto, Op.56
  • Gedenke mein!, WoO 130
• Isabella Colbran – Cavatina di partenza
• Jan Ladislav Dussek – Fantasia and Fugue for piano^[1]
• Anton Eberl – Symphony in D minor, Op. 34
• Johann Nepomuk Hummel
  • Rondo in E-flat major, Op. 11
  • Variations for piano Op. 15^[1]
  • Rondo-Fantasie, Op. 19
  • Mass in E-flat major, Op. 80
• Leopold Kozeluch – Three Piano Sonatas
• Niccolo Paganini – Divertimenti Carnevaleschi^[3]
• Ferdinand Ries – Piano sonata in A minor, Op. 1 No. 2
• Gioachino Rossini – 6 Sonate a quattro
• Antonio Salieri – Requiem in C minor
• Louis Spohr – Concerto for Violin No. 2 in D minor, Op. 2
• Carl Maria von Weber
  • 6 Variations sur l'air de Naga de 'Samori', Op.6
  • 6 Lieder, Op. 30
  • Turandot, Op.37 (incidental music for Schiller's production)
• Joseph Wölfl – Symphony in C major, Op. 41

• Ludwig van Beethoven – Fidelio, Op.72 (composed; premiered 1805)
• François-Adrien Boieldieu – Aline, reine de Golconde^[1]
• Pierre Gaveaux – Le Mariage inattendu
• Adalbert Gyrowetz – Selico
• Ferdinando Paer – Leonora
• Gaspare Spontini – Milton
• Georg Joseph Vogler – Samori^[1]

• January 24 – Delphine de Girardin, lyricist and writer (died 1855)
• January 25 – Antoni Edward Odyniec, librettist and writer (died 1885)
• February 5 – Johan Ludvig Runeberg, lyricist and poet (died 1877)
• March 14 – Johann Strauss I, Austrian composer (d. 1849)^[4]
• March 30 – Salomon Sulzer, Austrian Jewish composer (d. 1890)
• April 15 – Otto Friedrich Gruppe, lyricist and poet (died 1876)
• May 13 – Aleksey Khomyakov, lyricist and philosopher (died 1860)
• May 31 – Louise Farrenc, born Jeanne-Louise Dumont, French pianist and composer (d. 1875)
• June 1 – Mikhail Glinka, Russian composer (d. 1857)
• June 13 – Gustave de Wailly, librettist and writer (died 1878)
• June 21 – Johann Gabriel Seidl, librettist and archeologist (died 1875)
• July 14 – Julius Schuberth, German author and publisher, founder of Schuberth & Co. (d. 1875)^[5]
• July 17 – Carl Ferdinand Becker, music collector and musician (died 1877)
• August 19 – Christina Enbom, Swedish operatic soprano (d. 1880)
• September 8 – Eduard Mörike, lyricist and poet (died 1875)
• October 1 – Eduard Sobolewski, Polish-American violinist, composer and conductor (may have been born in 1808; d. 1872)
• October 18
  • Alexandre Charles Fessy, composer and musician (died 1856)
  • Joseph-Bernard Rosier, librettist and playwright (died 1880)
• November 27 – Sir Julius Benedict, German-born conductor and composer (d. 1885)
• date unknown – Ferdinand Giovanni Schediwy, Czech-born organist, conductor and composer (d. 1877)

• March 29 (or 30) – Ivan Khandoshkin, violinist and composer (b. 1747)
• June 16 – Johann Adam Hiller, conductor, composer and music writer (b. 1728)
• July 17 – Christian Ernst Graf, composer and kapellmeister (born 1723)
• August 24 – Valentin Adamberger, operatic tenor (b. 1740)
• November 5 – Maria Anna Adamberger, actress and singer, wife of Valentin Adamberger (b. 1752)
• November 19 – Pietro Guglielmi, composer (b. 1728)
• date unknown
  • Gioacchino Cocchi, opera composer (b.c.1720)
  • Marie Louise Marcadet, actress and singer (b. 1758)
  • Lorenzo Quaglio, stage designer (b. 1730)
  • Giovanni Valentini, composer, poet and painter (b. c. 1730)
  • Christian Felix Weisse, lyricist and writer (born 1726)
  • Abraham Wood, early American composer (b. 1752)^[6]