✔ 最佳答案
EXAMPLE: C major VS C minor
C major: no (#) / (b)
C minor: Bb , Eb, Ab
major: C D E F G A B C (ascending & descending orders)
major: T T S T T T S (Tone & Semitone 全音 & 半音)
harmonic minor: C D Eb F G Ab B C (ascending & descending orders: b3, #7)
harmonic minor: T S T T S T S (Tone & Semitone)
原本要Bb, 但係要 #7, 所以Bb 就變0左做B natural.
melodic minor: C D Eb F G A B C (ascending order: b3, #6, #7)
melodic minor: T S T T T T S (Tone & Semitone)
melodic minor: C D Eb F G Ab Bb C (descending order: b3, b6 & b7)
melodic minor: T S T T S S T (Tone & Semitone)
ascending order 時, 原本要Ab & Bb, 但要 #6 & #7, 所以 Ab & Bb 變成 A natural & B natural.
descending order 時, 原本要 #6 & #7, 但要跟key signatures 彈, 所以就變成 Ab & Bb, 亦即係 natural minor