May 17 Pietro Mascagni's opera "Rustic Chivalry" premieres in Rome at the Teatro Costanzi Jun 9 Comic opera "Robin Hood" by Reginald De Koven, Harry B. Smith, and Clement Scott premieres in Chicago Nov 4 Alexander Borodin's opera "Prince Igor" debuts at Mariinsky Theatre, St. Petersburg, Russia Nov 4 Alexander Borodin's opera "Prince Igor" premieres in Petersburg Music Premiere Dec 5 Hector Berlioz's opera "Les Troyens" premieres in Karlsruhe, Germany Composer Hector Berlioz 1889 Events in Music by Year 1891