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増四度または減五度インターバル(トライトーン)ギターインターバルレッスン
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Diminished 5th and Augmented 4th — Intervals in Music
Is this a Perfect 5th or a Perfect 4th?
Why Some INTERVALS Are Major Or Minor While Others Are Perfect?
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Major, minor, Diminished + augmented 5th
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m7b5と半分減少した7つの和音の重要な違い
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No 8 - Augmented 4th: Diminished 5th
Minor Augmented and Diminished Intervals
Tritone | A-D#/Eb (Augmented 4th/Diminished 5th)
Tritone | C-F#/Gb (Augmented 4th/Diminished 5th | A4/d5)