1805 in music

This is a list of music-related events in 1805.

Events

 * April 7 – Beethoven's Symphony No. 3, Eroica, has its public premiere at the Theater an der Wien in Vienna under his baton, marking the beginning of his middle period.
 * November 20 – Beethoven's only opera Fidelio in its original form (known retrospectively as Leonore) is premiered at the Theater an der Wien in Vienna.
 * Louis Spohr is appointed musical director to the court of Gotha.
 * Niccolò Paganini begins touring Europe.

Classical music

 * Ludwig van Beethoven
 * Piano Concerto No.4, Op. 58
 * Leonora Overture No.2, Op. 72a
 * Erlkönig, WoO 131
 * ETA Hoffmann – Piano Sonatas
 * Franz Krommer – Concerto for Oboe in F Major, Op. 52
 * Louis Spohr
 * 2 String Quartets, Op. 4
 * Violin Concerto No. 3, Op. 7
 * Joseph Wölfl
 * Piano Sonata in C minor, Op. 25
 * Three Piano Sonatas, Op. 33

Opera

 * Michele Carafa – Il Fantasma
 * Luigi Cherubini – Faniska
 * James Hook – The Soldier's Return

Births

 * January 7 – Philip Klitz, composer (d. 1854)
 * February 22 – Robert Reinick, lyricist and artist (died 1852)
 * March 5 – Théodore Labarre, harpist and composer (d. 1870)
 * March 17 – Manuel García, singer and music teacher (d. 1906)
 * May 14 – Johan Peter Emilius Hartmann, composer (d. 1900)
 * July 8 – Luigi Ricci, opera composer (d. 1859)
 * July 27 – Luigi Felice Rossi, composer and musicologist (d. 1863)
 * October 28 – John Thomson, composer (d. 1841)
 * November 1 – Alessandro Nini, composer (d. 1880)
 * November 14 – Fanny Mendelssohn, pianist and composer (d. 1847)

Deaths

 * January 23 – Wenzel Pichl, composer (b. 1741)
 * February 4 – Johann George Tromlitz, flautist (b. 1725)
 * April – Emerico Lobo de Mesquita, organist, conductor, composer and music teacher (b. 1746)
 * April 28 – Peter Pelham, harpsichordist, organist and composer (b. 1721)
 * May 9 – Friedrich Schiller, librettist and poet (born 1759)
 * May 10 – Johann Evangelist Haydn, tenor, brother of Joseph Haydn and Michael Haydn (b. 1743)
 * May 28 – Luigi Boccherini, composer (b. 1743)
 * August – Ann Griffiths, hymn-writer (b. 1776)
 * November – Hamoir, dancer and theatre director
 * December 18 – Gennaro Astarita, opera composer (b. c.1745)