Libretto

A libretto (from the Italian word , ) is the text used in, or intended for, 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 story line of a ballet or the texts of major liturgical works, such as the Mass, requiem, or sacred cantata.

The Italian word (, ) is the diminutive of the word ''libro'' ("book"). Sometimes other-language equivalents are used for libretti in that language, ''livret'' for French works, ''Textbuch'' for German and ''libreto'' for Spanish. A libretto is distinct from a synopsis or scenario of the plot, in that the libretto contains all the words and stage directions, while a synopsis summarizes the plot. Some ballet historians also use the word ''libretto'' to refer to the 15- to 40-page books which were on sale to 19th century ballet audiences in Paris and contained a very detailed description of the ballet's story, scene by scene.

The relationship of the librettist (that is, the writer of a libretto) to the composer in the creation of a musical work has varied over the centuries, as have the sources and the writing techniques employed.

In the context of a modern English-language musical theatre piece, the libretto is considered to encompass both the book of the work (i.e., the spoken dialogue) and the sung lyrics. Provided by Wikipedia