By Gioacchino Rossini. For Voice. (Nos. 1 and 2 for 2 Sopranos, No. 3 for Soprano and Tenor, No. 4 for Tenor and Bass). Vocal Collection. Masterwork. Octavo Size Book. 44 pages. Published by Alfred Publishing.

By Charles Francois Gounod (1818-1893). Vocal Duet. For Soprano Voice and Mezzo-Soprano Voice. Opera. Sheet music. 23 pages. Published by Prima Voce Editions

(Opera Duets - 19th Century French Opera). By Various. Vocal Duet. For Soprano Voice and Baritone Voice. Opera. Collection

By Johann Sebastian Bach. For Voice. Soprano and Alto Duets. Masterwork. Book. 72 pages. Published by Alfred Publishing.