1775 in music

Events

 * February 23 – Première of Pierre Beaumarchais's play, The Barber of Seville, which will later provide material for more than one opera.
 * Wilhelm Hauser becomes organist at the monastery of Lavaldieu and the teacher of Étienne Méhul.

Classical music

 * Carl Friedrich Abel – 6 String Quartets, Op. 12
 * John Alcock Jr. – 8 Easy Organ Voluntaries
 * Carl Philipp Emanuel Bach
 * Symphony in D major, H.663
 * Symphony in F major, H.665
 * Johann Christian Bach – Sinfonia concertante, W.C 34
 * Wilhelm Friedemann Bach – Keyboard Sonata in G major, F.7
 * Giovanni Battista Cirri – 6 String Quartets, Op. 13
 * Carl Ditters von Dittersdorf – Concerto for Oboe in D major
 * Tommaso Giordani – 6 Flute Trios, Op. 12
 * Joseph Haydn
 * Baryton Trio in D major, Hob.XI:114
 * Il Ritorno di Tobia, Hob.XXI:1 (sacred oratorio)
 * Mass in B-flat major, Hob.XXII:7
 * Joseph Martin Kraus – Requiem
 * Georg Anton Kreusser – 6 Flute Quintets, Op. 10
 * Franz Lamotte – Violin Concerto No. 2
 * Wolfgang Amadeus Mozart
 * Violin Concertos No. 3, No. 4 & No. 5
 * Symphony in C major, K.102/213c
 * Serenade in D major, K.204/213a
 * Church Sonata in B-flat major, K.212
 * Misericordias Domini, K.222/205a
 * Friedrich Wilhelm Rust – Sonata in A major, CzaR 110
 * Friedrich Schwindl – 6 Quartets, Op. 7
 * Maddalena Laura Sirmen – 6 Duets, Op. 5
 * Johann Matthias Sperger – Quartet in D major, for flute, viola, cello, and contrabass, M.C III:23a
 * Carl Stamitz – 3 Quintets, Op. 11
 * John Stanley – Six Concertos for the Organ, Harpsichord, or Forte Piano, with Accompanyments [sic] for Two Violins and a Bass, Op. 10 (London: Printed for the Author, and Sold by Mr Welcker)
 * Johann Adolph Hasse – La Danza

Opera

 * Johann André – Erwin und Elmire
 * Pasquale Anfossi – L'Avaro
 * André Ernest Modeste Grétry – La fausse Magie
 * Joseph Haydn – L'incontro improvviso, Hob.XXVIII:6
 * Gaetano Latilla – Antigono
 * Wolfgang Amadeus Mozart
 * La finta giardiniera, K. 196 (premiered January 13)
 * Il re pastore, K. 208
 * Josef Mysliveček – Il Demofoonte (second version, first premiered in 1769)
 * Giovanni Paisiello
 * Socrate immaginario, R.1.48
 * Il gran Cid, R.1.49

Methods and theory writings

 * Andrea Basili – Musica universale armonico pratica
 * Marie-Dominique-Joseph Engramelle – La Tonotechnie
 * Fedele Fenaroli – Regole musicali per i principianti di cembalo
 * Johann Caspar Heck – Short and Fundamental Instructions for Learning Thorough Bass
 * Jacob Schuback – Von der musikalischen Declamation

Births

 * January 21 – Manuel del Pópulo Vicente García, singer and composer (d. 1832)
 * March 24 – Muthuswami Dikshitar, poet and composer (d. 1835)
 * May 1 – Sophia Dussek, composer and musician (died 1831)
 * June 4 – Francesco Molino, guitarist and composer (d. 1847)
 * June 13 – Antoni Radziwiłł, politician and musician (d. 1833)
 * July 5 – William Crotch, composer (d. 1847)
 * July 9 – Matthew Lewis, librettist and writer (died 1818)
 * August 2 – José Ángel Lamas, composer (d. 1814)
 * August 31 – François de Fossa, guitarist and composer (d. 1849)
 * September 17 – Margrethe Schall, ballerina (d. 1852)
 * October 6 – Johann Anton André, German composer (died 1842)
 * October 15 – Bernhard Henrik Crusell, clarinettist and composer (d. 1838)
 * October 21 – Giuseppe Baini, composer and music critic (d. 1844)
 * October 30 – Catterino Cavos, organist, conductor and composer (d. 1840)
 * December 6 – Nicolo Isouard, Maltese composer (died 1818)
 * December 16 – François-Adrien Boïeldieu, composer (d. 1834)
 * December 25 – Antun Sorkočević, writer, composer and diplomat (d. 1841)
 * date unknown
 * Joseph Antonio Emidy, violinist and composer (d. 1835)
 * Andrea Nozzari, operatic tenor (d. 1832)
 * Giovanni Schmidt, Italian librettist (died c. 1839)
 * Giovanni Schmidt, Italian librettist (died c. 1839)

Deaths

 * January 15 – Giovanni Battista Sammartini, organist and composer (b. c. 1700)
 * May 1–4? — Francesco Barsanti, composer; recorder & oboe virtuoso (b. 1690)
 * May 7 – Cornelius Heinrich Dretzel, organist and composer (b. 1697)
 * May 9 – Vittoria Tesi, operatic contralto (b. 1700)
 * June 11 – Egidio Duni, composer (b. 1708)
 * July 26 – Alessandro Besozzi, oboist and composer (b. 1702)
 * November 1 – Pierre-Joseph-Justin Bernard, librettist and writer (born 1708)
 * November 7 – François Rebel, composer (b. 1701)
 * December 9 – Pietro Gnocchi, composer (b. 1689)
 * date unknown – Rosa Scarlatti, opera singer (b. 1727)