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''Acis and Galatea'' (HWV 49) is a musical work by George Frideric Handel with an English text by John Gay. The work has been variously described as a serenata, a masque, a pastoral or pastoral opera, a "little opera" (in a letter by the composer while it was being written), an entertainment and in the New Grove Dictionary of Music an oratorio. The work was originally devised as a one-act masque which premiered in 1718. Handel later adapted the piece into a three-act serenata for the Italian opera troupe in London in 1732, which incorporated a number of songs (still in Italian) from Aci, Galatea e Polifemo, his 1708 setting of the same story to different music. He later adapted the original English work into a two-act work in 1739. ''Acis and Galatea'' was the pinnacle of pastoral opera in England. Indeed, several writers, such as musicologist Stanley Sadie, consider it the greatest pastoral opera ever composed. As is typical of the genre, ''Acis and Galatea'' was written as a courtly entertainment about the simplicity of rural life and contains a significant amount of wit and self-parody. The secondary characters, Polyphemus and Damon, provide a significant amount of humor without diminishing the pathos of the tragedy of the primary characters, Acis and Galatea. The music of the first act is both elegant and sensual, while the final act takes on a more melancholy and plaintive tone. The opera was significantly influenced by the pastoral operas presented at the Theatre Royal, Drury Lane during the early 18th century. Reinhard Keiser and Henry Purcell also served as influences, but overall the conception and execution of the work is wholly individual to Handel. ''Acis and Galatea'' was by far Handel's most popular dramatic work and is his only stage work never to have left the opera repertory. The opera has been adapted numerous times since its premiere, with a notable arrangement being made by Wolfgang Amadeus Mozart in 1788. Handel never gave the work in the form in which it is generally heard today, since it contains music which, while by Handel, was never added by him. ==Composition history== Handel composed the first version of ''Acis and Galatea'' while he was living at Cannons (the seat of James Brydges, 1st Duke of Chandos) during 1717–1718. It was Handel’s first dramatic work in the English language and was clearly influenced by the English pastoral operas of Johann Ernst Galliard and Johann Christoph Pepusch, of whom the latter worked with Handel at Cannons. The work is set to a libretto by John Gay which is based on Ovid's ''Metamorphoses'', xiii (see Acis and Galatea (mythology)), and there is some uncertainty as to whether he was the only author of the text. The structure of the writing indicates that the original work by Gay was intended for only three characters and that the text for more characters was added later, possibly by John Hughes or Alexander Pope whose writings were added to the work's text. The libretto also borrowed freely from John Dryden's English translation of Ovid published in 1717, ''The Story of Acis, Polyphemus and Galatea''. ''Acis and Galatea'' was first performed in the summer of 1718 at Cannons with local tradition holding that the work was performed outside on the terraces overlooking the garden. This is the period in which the gardens at Cannons were being extensively 'improved' with water features that included an impressive ''jet d'eau'',〔See the Wikipedia article John Theophilus Desaguliers for details of this〕 and so the choice of ''Acis and Galatea'' at this time, given that the conclusion requires a fountain, seems particularly apt. It is not clear whether the original performance was staged, semi-staged, or performed as a concert work. The Cannons version included only five singers – a soprano, three tenors and a bass – who not only sang the principal roles but also served as the "chorus". This version contained the character of Coridon who was subsequently deleted from later versions. Aside from the aria "As when the dove," which is a reworking of "Amo Tirsi" from Handel's cantata ''Clori, Tirsi e Fileno'', all of the music was original to this production. Perhaps the best-known arias from this piece are the bass solo: "I rage, I melt, I burn" and the tenor aria "Love in her eyes sits playing". The instrumental music for this first version was orchestrated for a minimum of seven players (basso continuo, strings, and oboes doubling recorders, however it is possible that the violins were doubled to add a fuller sound, and some early copies may indicate the use of a bassoon). The opera was first published in 1722, and enjoyed a number of amateur performances in England from as early as 1719. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Acis and Galatea (Handel)」の詳細全文を読む スポンサード リンク
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