|
In music theory, the dominant seventh flat five chord is a seventh chord composed of a root note, together with a major third, a diminished fifth and a minor seventh from root (1, 3, 5 and 7). For example, the dominant seventh flat five built upon C (C75) would be C-E-G-B. It can be represented by the integer notation . In diatonic harmony, the dominant seventh flat five chord does not naturally occur on any scale degree (as does, for example, the dominant seventh on the fifth scale degree: C7 in F major). The dominant seventh flat five may be considered an altered chord, created by diminishing the fifth of a dominant seventh chord, and may use the whole-tone scale,〔Manus and Hall (2008). ''Alfred's Basic Bass Scales & Modes''/''Alfred's Basic Bass Method'', p.22/128. ISBN 0739055844/ISBN 0739055836.〕 as may the augmented minor seventh chord, or the .〔Berle, Annie (1996). ''Contemporary Theory And Harmony'', p.100-101. ISBN 0-8256-1499-6.〕 Similarly, a minor seventh flat five chord (m75, also known as a half-diminished seventh chord) is constructed by diminishing the fifth of a minor seventh chord:〔Morgen, Howard (1979). ''Concepts: Arranging for Fingerstyle Guitar'', p.161. ISBN 0-7692-3075-X.〕 :1 3 5 7 :C E G B. The minor seventh flat five chord occurs in the diminished scale〔Manus and Hall (2008), p.23/129.〕 on multiple scale degrees as well as on the seventh degree of the major scale (e.g., B-D-F-A in C major). An example can be found in Olivia Newton-John's song Magic, and is the most notable song which uses the seventh flat five chord. The sequence goes from D major to D seventh flat fifth, back and forth. ==Dominant seventh flat five chord table== 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「Dominant seventh flat five chord」の詳細全文を読む スポンサード リンク
|