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Accords diminished

A diminished seventh chord is a four note chord that comprises a diminished triad plus the interval of a diminished seventh (alternatively regarded enharmonically as a major sixth) above the root. Thus it is (1, ?3, ?5, 7), or enharmonically (1, ?3, ?5, 6), of any minor scale; for example, C diminished-seventh would be (C, E?, G?, B), or enharmonically (C, E?, G?, A). It occurs as a leading-tone seventh chord in harmonic minor and can be represented by the integer notation {0, 3, 6, 9}. Because of this it can also be viewed as four notes all stacked in intervals of a minor third. The diminished seventh contains two diminished fifths, which often resolve inwards. (Wikipedia)

diminished
diminished
diminished