Siegfried (German: [ˈziːk.fʀiːt] ), WWV 86C, is the third of the four epic music dramas that constitute Richard Wagner's cycle Der Ring des Nibelungen (English: The Ring of the Nibelung). It premiered at the Bayreuth Festspielhaus on 16 August 1876, as part of the first complete performance of The Ring cycle.
The autograph manuscript of the work is preserved in the Richard Wagner Foundation.
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A leitmotif or Leitmotiv (/ˌlaɪtmoʊˈtiːf/) is a "short, recurring musical phrase" associated with a particular person, place, or idea. It is closely related to the musical concepts of idée fixe or motto-theme. The spelling leitmotif is a partial anglicization of the German Leitmotiv (IPA: [ˈlaɪtmoˌtiːf] ), literally meaning "leading motif", or "guiding motif". A musical motif has been defined as a "short musical idea ... melodic, harmonic, or rhythmic, or all three", a salient recurring figure, musical fragment or succession of notes that has some special importance in or is characteristic of a composition: "the smallest structural unit possessing thematic identity".
In particular, such a motif should be "clearly identified so as to retain its identity if modified on subsequent appearances" whether such modification be in terms of rhythm, harmony, orchestration or accompaniment. It may also be "combined with other leitmotifs to suggest a new dramatic condition" or development. The technique is notably associated with the operas of Richard Wagner, and most especially his Der Ring des Nibelungen, although he was not its originator and did not employ the word in connection with his work.