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Pitch axis theory is a musical technique used in constructing chord progressions. The tonic is used as the bass note, and melodic scales are chosen according to the chords that lie beneath them. The pitch axis is the pitch common and most important to the tonic of the initial key and all chords in a chord progression.〔Paul Del Nero and Mitch Seidman (2006). ''Playing the Changes: Guitar: A Linear Approach to Improvising'', p.2. ISBN 0-634-02223-7.〕 ==Concept== Each of the seven modern modes is obtainable from any of the others by a sequence of diatonic rotations; by such a sequence, for example, C Ionian (C-D-E-F-G-A-B) becomes D Dorian (D-E-F-G-A-B-C), which becomes E Phrygian (E-F-G-A-B-C-D), and so on, until the original C Ionian mode is obtained. Therefore, each of the seven modes of any of the twelve major keys is a mode of the other six in that particular key. Pitch axis theory suggests that for each mode, there is a chord that accompanies it. When that chord occurs, the corresponding mode should be used for the melody or for soloing. The more common modes, along with their chords: This is the first part of pitch axis theory. The second step is implementing these modes as chords built on a common root. This is best shown with an example. 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「Pitch axis theory」の詳細全文を読む スポンサード リンク
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