1773 in music

Events

• 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.

Opera

• 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)

Classical music

• 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

Births

• 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

Deaths

• 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)