January 18 – Carl Stenborg, Elisabeth Olin and Hedvig Wigert star in Thetis and Phelée, the inaugural production of the Royal Swedish Opera.
February – Joseph Leutgeb tours Italy with Leopold and Wolfgang Amadeus Mozart.
July 14 - Wolfgang Amadeus Mozart and his father Leopold go to Vienna in search of work.
James Hook vacates his post at Marylebone Gardens.
Pasquale Anfossi – Demofoonte
Domenico Cimarosa – La finta parigina
Joseph Haydn – L'infedeltà delusa; Philemon und Baucis
Andrea Luchesi – L'Inganno Scoperto, overo Il Conte Caramella (libretto by Carlo Goldoni)
Anton Schweitzer – Alceste (libretto by Christoph Martin Wieland)
Johann Albrechtsberger – Concerto for Harp in C major
Samuel Arnold – The Prodigal Son (oratorio)
Wolfgang Amadeus Mozart – Symphony No. 25 in G minor
Giovanni Battista Sammartini – Six String Quintets
Carl Ditters von Dittersdorf - La Liberatrice del Popolo Giudaico nella Persia, o sia l’Esther (oratorio)
January 4 – Johann Peter Heuschkel, composer (died 1853)
March 7 – Tommaso Marchesi, composer (died 1852)
May 26 – Hans Georg Nägeli, composer (died 1836)
July 6 – Wenzel Thomas Matiegka, composer (died 1830)
September 24 – Johann Philipp Christian Schulz, composer (died 1827)
October 23 – Pietro Generali, composer (died 1832)
December 9 – Marianne Ehrenström, musician and writer (died 1867)
December 24 – Joseph Wölfl, pianist and composer (died 1812)
exact date unknown
Edward Bunting, Irish folk song collector
Inga Åberg, opera singer and actress
April 11 – Carlo Grua, composer (b. c. 1700)
April 12 – Elizabeth Young, operatic contralto and actress (b. c. 1730)
May 24 – Jan Zach, violinist, organist and composer (b. 1699)
July 12 – Johann Joachim Quantz, flautist and composer (b. 1697)
August 25 – Franz Nikolaus Novotny, organist and composer (born 1743)
date unknown
Francis Hutcheson (b. c. 1722)
Joan Baptista Pla, oboist and composer (b. c. 1720)
Hester Santlow, "England's first ballerina" (b. c. 1690)
1773 in music Wikipedia (Text) CC BY-SA
