1866 in music
Events
- January – Gabriel Fauré becomes organist at the Church of Saint-Sauveur, at Rennes in Brittany.
- March-December – Pyotr Ilyich Tchaikovsky writes his Symphony No. 1, Winter Daydreams.
- May 30 – Bedřich Smetana's opera The Bartered Bride debuts at the Provisional Theatre.
- August – Sir William Sterndale Bennett becomes Principal of the Royal Academy of Music in London.
- August 4 – First performance of Gabriel Fauré's Cantique de Jean Racine.
- August 9 – Marie Trautmann marries fellow musician Alfred Jaëll.
- October 21 – Jacques Offenbach's operetta La Vie parisienne debuts in Paris at the Théâtre du Palais Royale.
- November 17 – Ambroise Thomas's opera Mignon debuts in Paris at the Opéra-Comique.
- Theodore Thomas conducts the New York Philharmonic in the American premiere of the Prelude to Act 1 of Wagner's Tristan und Isolde.
- Mily Balakirev publishes his Collection of Russian Folksongs, including "The Song of the Volga Boatmen".
- Georges Bizet completes the opera La jolie fille de Perth; it is premiered the following year.
Published popular music
- "Come Back To Erin" w.m. Claribel
- "We Parted By The River" w.m. William Shakespeare Hays
- "When You and I Were Young, Maggie" by James A. Butterfield & George Washington Johnson
- "Write Me A Letter Home" w.m. Will S. Hays
Classical music
- Felix Draeseke – Fantasie on Themes from Boieldieus "Weisse Dame"
- Johann Gottfried Piefke – Königgrätzer Marsch
- Amilcare Ponchielli – Concerto for Trumpet in F major
- Arthur Sullivan – Irish Symphony
- Karel Miry
- *Maria van Boergondië
- *De Keizer bij de Boeren
- *De occasie maakt den dief
- Franz von Suppé – Leichte Kavallerie
- La Belle Hélène London production opened at the Adelphi Theatre on June 30
- The Black Crook – the first "book musical". Broadway production opened at Niblo's Garden on September 12 and ran for 474 performances
Births
- January 13 – Vasily Kalinnikov, composer
- April 1 – Ferruccio Busoni, pianist, composer
- April 13 – Carl Valentin Wunderle, violinist
- May 17 – Erik Satie, composer
- June 15 – Charles Wood, composer
- June 29 – George Frederick Boyle, composer
- July 13 – La Goulue, can-can dancer
- July 23 – Francesco Cilea, composer
- September 26 – George H. Clutsam, pianist, composer and writer
- November 7 – Paul Lincke, composer
- date unknown
- *Annibale Fagnola, violin maker
- *Dorothea Ruggles-Brise, née Stewart-Murray, collector of traditional Scottish music
Deaths
- January 25 – Minna Wagner, estranged wife of Richard Wagner, 56
- February 6 – Anna Liszt, pianist and mother of Franz Liszt, 77
- March 20 – Rikard Nordraak, composer, 21
- July 25 – Aloys Schmitt, composer, pianist and music teacher, 77
- October 2 – Adam Darr, guitarist, singer and composer, 55
- November 26 – Adrien-Francois Servais, cellist, 59
- November 29 – Sophie Löwe, operatic soprano, 51
- December 1 – Jules Demersseman, flautist and composer, 33
- December 3 – Jan Kalivoda, violinist, conductor and composer, 65