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In music, a chromatic fourth, or ''passus duriusculus'',〔Monelle, Raymond (2000). ''The Sense of Music: Semiotic Essays'', p.73. ISBN 978-0-691-05716-3.〕 is a melody or melodic fragment spanning a perfect fourth with all or almost all chromatic intervals filled in (chromatic line). The quintessential example is in D minor with the tonic and dominant notes as boundaries, : File:Chrom4th Example.png The chromatic fourth was first used in the madrigals of the 16th Century. The Latin term itself ("suffered somewhat hard") originates in Christoph Bernhard's 17th century ''Tractatus compositionis augmentatus'' (1648–49), where it appears to refer to repeated melodic motion by semitone creating consecutive semitones.〔 The term may also relate to the ''pianto'' associated with weeping.〔 In the Baroque, Johann Sebastian Bach used it in his choral as well as his instrumental music, in the ''Well-Tempered Clavier'', for example (the chromatic fourth is indicated by a red bracket), : 400px In operas of the Baroque and Classical, the chromatic fourth was often used in the bass and for woeful arias, often being called a "lament bass". In the penultimate pages of the first movement of Beethoven's Ninth Symphony, the chromatic fourth appears in the cellos and basses. This doesn't mean that the chromatic fourth was always used in a sorrowful or foreboding way, or that the boundaries should always be the tonic and dominant notes. One counterexample comes from the Minuet of Wolfgang Amadeus Mozart's String Quartet in G major, K. 387 (the chromatic fourths are conveniently bracketed by the slurs and set apart with note-to-note dynamics changes), : 400px ==Musical works using the chromatic fourth or ''passus duriusculus''== *Henry Purcell, "Dido's Lament"〔 *J. S. Bach, Mass in B minor, Crucifixus, also BWV 12, "Weinen, Klagen, Sorgen, Zagen" *J. S. Bach, BWV 78: "Jesu, der du meine Seele" *J. S. Bach, BWV 150: "Nach Dir, Herr, verlanget mich" (in the first choral, and a reverse, ''whole note upwards'' melody in the final Chaconne) *J. S. Bach, BWV 614: "Das Alte Jahr vergangen ist" (Left hand part and then pedal part) 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「chromatic fourth」の詳細全文を読む スポンサード リンク
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