La verità in cimento is an opera

Opera

Opera is an art form in which singers and musicians perform a dramatic work combining text and musical score, usually in a theatrical setting. Opera incorporates many of the elements of spoken theatre, such as acting, scenery, and costumes and sometimes includes dance...

 by Antonio Vivaldi

Antonio Vivaldi

Antonio Lucio Vivaldi , nicknamed because of his red hair, was an Italian Baroque composer, priest, and virtuoso violinist, born in Venice. Vivaldi is recognized as one of the greatest Baroque composers, and his influence during his lifetime was widespread over Europe...

 to a libretto

Libretto

A libretto is the text used in an extended musical work such as an opera, operetta, masque, oratorio, cantata, or musical. The term "libretto" is also sometimes used to refer to the text of major liturgical works, such as mass, requiem, and sacred cantata, or even the story line of a...

 by Giovanni Palazzi. The opera, which is Vivaldi's 13th, was premiered during the Carnival at Venice

Venice

Venice is a city in northern Italy which is renowned for the beauty of its setting, its architecture and its artworks. It is the capital of the Veneto region...

 in 1720. The work is listed as RV

Ryom Verzeichnis

The Ryom-Verzeichnis or Répertoire des oeuvres d'Antonio Vivaldi is a catalog of the music of Antonio Vivaldi created by Peter Ryom...

739 in the Vivaldi catalogue.

Roles

Role	Voice type	Premiere Cast, 1720 (Conductor: - )
Rosane	soprano Soprano A soprano is a voice type with a vocal range from approximately middle C to "high A" in choral music, or to "soprano C" or higher in operatic music. In four-part chorale style harmony, the soprano takes the highest part, which usually encompasses the melody...	Anna Maria Strada Anna Maria Strada Anna Maria Strada was an Italian soprano of the 18th century. She is best remembered for her association with the composer George Frideric Handel, in whose operas Strada sang.-Career:...
Rustena	mezzo-soprano Mezzo-soprano A mezzo-soprano is a type of classical female singing voice whose range lies between the soprano and the contralto singing voices, usually extending from the A below middle C to the A two octaves above...	Chiara Orlandi
Melindo	contralto Contralto Contralto is the deepest female classical singing voice, with the lowest tessitura, falling between tenor and mezzo-soprano. It typically ranges between the F below middle C to the second G above middle C , although at the extremes some voices can reach the E below middle C or the second B above...	Antonia Laurenti, "La Coralli".
Damira	contralto	Antonia Merighi Antonia Merighi Antonia Margherita Merighi was an Italian contralto active between 1711 and 1744 and particularly known today for her performances in operas by George Frideric Handel.-Biography:...
Zelim	soprano (castrato Castrato A castrato is a man with a singing voice equivalent to that of a soprano, mezzo-soprano, or contralto voice produced either by castration of the singer before puberty or one who, because of an endocrinological condition, never reaches sexual maturity.Castration before puberty prevents a boy's... )	Girolamo Albertini
Sultan Sultan Sultan is a title with several historical meanings. Originally, it was an Arabic language abstract noun meaning "strength", "authority", "rulership", and "dictatorship", derived from the masdar سلطة , meaning "authority" or "power". Later, it came to be used as the title of certain rulers who...  Mamud	tenor Tenor The tenor is a type of male singing voice and is the highest male voice within the modal register. The typical tenor voice lies between C3, the C one octave below middle C, to the A above middle C in choral music, and up to high C in solo work. The low extreme for tenors is roughly B2...	Antonio Barbieri

Synopsis

Mamud had two sons, one by his favourite Damira, one by the Sultana Rustena. He had them exchanged at birth, so that Melindo, in truth the son of Damira, is thought to be the legitimate heir, a position rightfully held by Zelim. When the marriage is proposed of Melindo to Rosane, the heiress to another Sultanate, (and in fact beloved by Zelim), Mamud resolves to reveal the true state of affairs. After various twists and turns, Zelim inherits the larger portion of his empire, while Melindo contents himself with a secondary kingdom (Rosane's country) and is allowed to marry the fickle princess Rosane. This leaves everyone satisfied.