The World's most beautiful music: Mozart: Ruhe sanft, mein holdes Leben

Zaide is an unfinished opera, K. 344, written by Wolfgang Amadeus Mozart in 1780. Emperor Joseph II, in 1778, was in the process of setting up an opera company for the purpose of performing German opera. One condition required of the composer to join this company was that he should write a comic opera. At Salzburg in 1779 he began work on a new "rescue" opera, Zaide. It contains spoken dialogue, which also classifies it as a Singspiel (literally, "singing play").

Rescue operas were popular at the time, since Muslim pirates were preying on Mediterranean shipping, particularly to obtain female, and male slaves, for various purposes. This story represents a reversal, as Zaide goes to save her beloved, Gomatz. Ludwig van Beethoven's only opera, Fidelio, is cast in the same mold, with spoken dramatic dialogue, although it is a husband (a political prisoner) who is saved from death in a Spanish prison.

Mozart was composing for a German libretto by Johann Andreas Schachtner, set in Turkey, which was the scene of his next, completed rescue Singspiel (Die Entführung aus dem Serail). Sadly, he would soon abandon Zaide, to work on Idomeneo, and never returned to the project. The work was lost until after his death, when Constanze Mozart, his wife, found it in his scattered manuscripts in 1799. The fragments wouldn't be published until 1838, and its first performance was held in Frankfurt on January 27, 1866. Zaide has since been said to be the foundations of a masterpiece, and received critical acclaim. The tender soprano air, "Ruhe sanft, mein holdes Leben" is the only number that might be called moderately familiar.

Information source: Wikipedia

The following performance is by Soprano Sandrine Piau, Christophe Rousset Festival de Saint-Denis, Basilica of Saint-Denis, 2003