Are I Lombardi alla prima crociata and Giasone both operas?
Giasone Giasone ("Jason") is an opera in three acts and a prologue with music by Francesco Cavalli and a libretto by Giacinto Andrea Cicognini. It was premiered at the Teatro San Cassiano, Venice on 5 January 1649, during carnival. "Giasone" was "the single most popular opera of the 17th century". The plot is loosely based on the story of Jason and the golden fleece, but the opera contains many comic elements too.
Manon Manon (] ) is an "opéra comique" in five acts by Jules Massenet to a French libretto by Henri Meilhac and Philippe Gille, based on the 1731 novel "L’histoire du chevalier des Grieux et de Manon Lescaut" by the Abbé Prévost. It was first performed at the Opéra-Comique in Paris on 19 January 1884, with sets designed by Eugène Carpezat (Act I), Auguste-Alfred Rubé and Philippe Chaperon (Acts II and III), and Jean-Baptiste Lavastre (Act IV).