Julietta is an opera by Bohuslav Martinů, who also wrote the libretto, in French, based on the play Juliette, ou La clé des songes (Juliette, or The Key of Dreams) by the French author Georges Neveux. A libretto in Czech was later prepared for its 1938 premiere, and it has become widely considered as Martinů's masterpiece.

Original Name Julietta (Snář) (Julietta
Librettist Bohuslav Martinů (Based on the play Juliette, ou La clé des songes (Juliette, or The Key of Dreams) by the French author Georges Neveux.)
Date of composition 1937 (1936-1937) in Paris, France
Premiered 1938, March 16th (National Theatre) in Prague, Czech Republic
Type Opera
Catalogue H 253
Spoken language French
Instruments Voice (Soprano) - Julietta
Voice (Tenor) - Michel
Voice (Mezzo-Soprano) - Small Arab
Voice (Bass) - Old Arab
Voice (Mezzo-Soprano) - Woman selling birds and poultry
Voice (Soprano) - Woman selling fish
Voice (Baritone) - The man with the helmet
Voice (Tenor) - Police officer
3x Voice (Soprano) - ; Three gentlemen
Voice (Bass) - Grandfather Youth
Voice (Bass) - Grandfather
Voice (Contralto) - Grandmother
Voice (Contralto) - Fortune teller
Voice (Bass-Baritone) - The seller of memories
Voice (Bass) - The old sailor
Voice (Tenor) - The young sailor
Voice (Mezzo-Soprano) - The old lady
Voice (Tenor) - The forest guard
Voice (Soprano) - The messenger
Voice (Tenor) - The official
Voice (Bass-Baritone) - The beggar
Voice (Bass) - The convict
Voice (Tenor) - The railway engineer
Voice (Bass) - The nightwatchman
Chorus/Choir
Autotranslations beta Bohuslav Martinů: The key to Dreams), H 253
Bohuslav Martinů: The key to Dreams), H 253
Bohuslav Martinů: The key to Dreams), H 253