1780 in music

Events

• Wolfgang Amadeus Mozart composes his opera Idomeneo at Munich.
• The Danish national anthem, "Kong Kristian...", is first sung.
• Carl Philipp Emanuel Bach's Versuch über die wahre Art das Clavier zu spielen goes into its third edition.
• 1780–1782 Emanuel Bach revises his Magnificat Wq 215 (H 772) (Hamburg version).

Classical music

• Luigi Boccherini – Musica notturna delle strade di Madrid
• Karl Ditters von Dittersdorf – Job (oratorio)

Opera

• Domenico Cimarosa – Le donne rivali
• Franz Danzi – Cleopatra
• André Grétry – Aucassin et Nicolette
• Wolfgang Amadeus Mozart – Zaide (unfinished)
• Giovanni Paisiello – Il Barbiere di Siviglia
• Niccolò Piccinni – Atys
• Bernardo Porta – La Principessa d'Amalfi

Births

• January 14 – François-Joseph Dizi
• February 8 – Walenty Karol Kratzer, composer
• March 10 – Juan José Landaeta, composer
• May 22 – Jan Emmanuel Dulezalek, composer
• May 28 – Joseph Frohlich, composer
• June 18 – Michael Henkel, composer
• July 25 – Christian Theodor Weinlig, composer
• November 2 – Alexandrine-Caroline Branchu, soprano
• November 3 – Victor Dourlen, composer
• November 16 – Robert Archibald Smith, composer
• November 22 – Conradin Kreutzer

Deaths

• January 4 – Hedvig Wigert, opera singer (b. 1748)
• January 10 – Francesco Antonio Vallotti, organist, composer and music theorist (b. 1697)
• February 1 – Johann Ludwig Krebs, composer (b. 1713)
• April 21 – Ferdinand Zellbell, composer
• August 19 – Bernhard Haltenberger, composer
• September 6 – George Alexander Stevens, songwriter (b. 1710)
• December 14 – Ignatius Sancho, composer and actor (b. c. 1729)
• date unknown – Martin Nürenbach, dancer