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A Picardy third, Picardy cadence () or, in French, tierce picarde is a harmonic device used in Western classical music. It refers to the use of a major chord of the tonic at the end of a musical section that is either modal or in a minor key. This is achieved by raising the third of the expected minor triad by a semitone to create a major triad, as a form of resolution.〔Percy Scholes (ed.), ''The Oxford Companion to Music: Self-indexed and with a Pronouncing Glossary and Over 1,100 Portraits and Pictures'', ninth edition, completely revised and reset and with many additions to text and illustrations (London and New York: Oxford University Press, 1955), pp. 1027–28.〕 For example, instead of a cadence ending on an A minor chord containing the notes A, C, and E, a ''tierce de Picardie'' ending would consist of an A major chord containing the notes A, C, and E. Note that the minor third between the A and C of the A minor chord has become a major third in the ''tierce de Picardie'' chord. The Picardy third does not necessarily occur at the end of a section: it can be found at any perfect cadence or plagal cadence where the prevailing key is minor. ==Illustration== What makes this cadence a ''tierce de Picardie'' is shown by the red natural sign. Instead of the expected B-flat (which would make the chord minor) the accidental gives us a B natural, making the chord major. Listen to the final four measures of "I Heard the Voice of Jesus Say" with and without Picardy third (harmony by R. Vaughan Williams).〔Denise LaGiglia and Anna Belle O'Shea, ''The Liturgical Flutist: A Method Book and More'' (Chicago, IL: GIA Publications, 2005), p. 166. ISBN 978-1-57999-529-4.〕 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「Picardy third」の詳細全文を読む スポンサード リンク
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