Prince Igor (Russian: Князь Игорь, Knyaz' Igor') is an opera in four acts with a prologue, written and composed by Alexander Borodin. The composer adapted the libretto from the Ancient Russian epic The Lay of Igor's Host, which recounts the campaign of Rus' prince Igor Svyatoslavich against the invading Cuman ("Polovtsian") tribes in 1185. He also incorporated material drawn from two medieval Kievan chronicles. The opera was left unfinished upon the composer's death in 1887 and was edited and completed by Nikolai Rimsky-Korsakov and Alexander Glazunov. It was first performed in St. Petersburg, Russia, in 1890.

Librettist Alexander Borodin (Adapted from the Ancient Russian epic "The Lay of Igor's Host")
Date of composition 1887 (1869-1887. Unachieved upon the composer's death in 1887 and was edited and completed by Nikolai Rimsky-Korsakov and Alexander Glazunov.)
Premiered 1890, November 4th (Mariinsky Theatre) in Saint Petersburg, Russia
Approx. duration 210 minutes
Spoken language Russian
Instruments Orchestra
Voice (Baritone) - Igor Svyatoslavich, Prince of Novgorod-Seversky
Voice (Soprano) - Yaroslavna, Igor's wife by his second marriage
Voice (Tenor) - Vladimir Igorevich, Igor's son from his first marriage
Voice (Bass) - High ; Galitsky (Vladimir Yaroslavich), Prince of Galich, brother of Princess Yaroslavna
Voice (Bass) - Konchak, Polovtsian khan
Silent Role - Gzak, Polovtsian khan
Voice (Contralto) - Konchakovna, daughter of Khan Konchak
Voice (Tenor) - Ovlur, a Christian Polovtsian
Voice (Bass) - Skula, a gudok-player
Voice (Tenor) - Yeroshka, a gudok-player
Voice (Soprano) - Yaroslavna's nurse
Voice (Soprano) - A Polovtsian maiden
Chorus/Choir - Russian princes and princesses, boyars and boyarynas, elders, Russian warriors, maidens, people, Polovtsian khans, Konchakovna's girlfriends, slaves of Khan Konchak, Russian prisoners, Polovtsian sentries
In listings Famous Works
Autotranslations beta Alexandre Borodine: Prince Igor
Aleksandr Porfir'evič Borodin: Prince Igor
Alexander Porfirjewitsch Borodin: Prince Igor