The year 1665 in music involved some significant events.

Events

• May 27 – John Loosemore completes the construction of the organ at Exeter Cathedral.
• Francesco Cavalli becomes first organist of St Mark's Basilica in Venice.

Bands formed

• Band of the Grenadier Guards, under the terms of a Royal Warrant issued the previous year.^[1]

Publications

• Christoph Bernhard – Geistliche Harmonien, Op.1
• Wojciech Bobowski – Mezmurlar, a collection of psalms in Turkish
• Giovanni Felice Sances – Missa Sanctae Mariae Magdalenae
• Christopher Simpson – The Principles of Practical Musick

Classical music

• John Blow – I will always give thanks
• Maurizio Cazzati
  • Sonate a 2, 3, 4 e 5 con alcune per tromba, Op.35
  • Messa e salmi a 5 voci con 4 istromenti, Op.36
• Jean Baptiste Lully – La naissance de Vénus, LWV 27 (ballet, premiered Jan. 26 in Paris)
• Guillaume-Gabriel Nivers – Livre d'orgue contenant cent pièces de tous les tons de l'église, the first organ collection that featured forms that became standard for the French Baroque organ school

Opera

• Antonio Bertali – L'Alcindo
• Andrea Mattioli – Ciro

Births

• February 21 (baptized) – Benedikt Anton Aufschnaiter, Austrian Baroque composer (died 1742)
• March 17 – Élisabeth Jacquet de La Guerre, harpsichordist and composer (died 1729)^[2]
• date unknown
  • Benedikt Anton Aufschnaiter, composer (died 1742)
  • Nicolaus Bruhns, organist and composer (died 1697)
  • Johann Nikolaus Hanff, organist and composer (died 1712)
  • José de Torres, composer, organist, music theorist and music publisher (died 1738)
• probable – Carlo Giuseppe Testore, luthier (died 1716)

Deaths

• January 21 – Domenico Mazzochi, Italian composer (born 1592)
• November 16 – João Lourenço Rebelo, Portuguese court composer (born 1610)
• December 10 – Tarquinio Merula, organist, violinist and composer (born c.1594)