January 1 - First performance of William Boyce's "At length, th’imperious Lord of War".
March 24 - Christoph Willibald Gluck leaves Vienna, bound for Bologna where his opera Il trionfo di Clelia is to be premièred.
April 26 - Gluck is awarded a pension of 600 gulden by Empress Maria Theresa.
May 14 - Nuovo Teatro Pubblico in Bologna opens with the première of Gluck's Il trionfo di Clelia; it is the first major opera house to be constructed with public funds and owned by the municipality.
May 26 - In Paris, François-Joseph Gossec goes to court to retrieve property from the estate of his late patron Alexandre Le Riche de La Poupelinière.
July 9 - Mozart family grand tour: The family of Wolfgang Amadeus Mozart sets out on a European tour, ending this year in Paris.
James Hook becomes musical director of Marylebone Gardens in London.
Pietro Guglielmi – Tito Manlio
Joseph Haydn – Acide
Niccolò Jommelli - Didone abbandonata (third version)
Vincenzo Manfredini – Carlo Magno
Johann Georg Albrechtsberger - Applausus musicus (cantata)
Joseph Haydn – Symphonies nos. 12 and 13
Michael Haydn – Symphony in G major "Divertimento"; Symphony in B-flat major, Perger 51 "La Confidenza"
Georg Philipp Telemann - Gott, man lobet dich in der Stille (cantata)
February 20 – Adalbert Gyrowetz, composer (died 1850)
March 18 – Marie Christine Björn, ballerina
April 7 – Domenico Dragonetti, composer (died 1846)
May 15 – Franz Danzi, composer (died 1826)
June 14 – Johann Simon Mayr, composer (died 1845)
June 22 – Étienne Méhul, composer (died 1817)
December 12 - Margareta Alströmer, singer and artist (died 1816)
February 7 – Christoph Schaffrath, composer (born 1709)
February 12 (buried) – Gottfried Heinrich Bach, keyboardist son of Johann Sebastian Bach (born 1724)
May 30 – Gustaviana Schröder, Swedish singer (born 1701)
June 1 – Johann Caspar Vogler, composer
July 17 – Wenzel Raimund Pirck, composer
August 14 – Giovanni Battista Somis, composer
December 2 – Carl August Thielo, composer
unknown date – Johann Gottlieb Janitsch, composer (born 1708)
probable - Nicola Logroscino, composer (born 1698)
1763 in music Wikipedia