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For example, the interval from A 3 to G 4 is a minor seventh, as the note G 4 lies ten semitones above A 3, and there are seven staff positions from A 3 to G 4. Diminished and augmented sevenths span the same number of staff positions, but consist of a different number of semitones (nine and twelve, respectively).
The minor seventh chord may also have its interval of minor seventh (between root and seventh degree, i.e.: C–B ♭ in C–E ♭ –G–B ♭) rewritten as an augmented sixth C–E ♭ –G–A ♯. [6] Rearranging and transposing, this gives A ♭ –C ♭ –E ♭ –F ♯, a virtual minor version of the German augmented sixth chord. [7]
Interval recognition, the ability to name and reproduce musical intervals, is an important part of ear training, music transcription, musical intonation and sight-reading. Reference songs [ edit ]
The diminished seventh is used quite readily in the minor key, where it is present in the harmonic minor scale between the seventh scale step and the sixth scale step in the octave above. In 12-tone equal temperament , a diminished seventh is equal to nine semitones, a ratio of 2 9/12 :1 (approximately 1.6818), or 900 cents, and is ...
For instance, a C chord is a C major triad, and the name C minor seventh (Cm 7) implies a minor 3rd by rule 1, a perfect 5th by this rule, and a minor 7th by definition (see below). This rule has one exception (see next rule). When the fifth interval is diminished, the third must be minor. [d] This rule overrides rule 2.
The harmonic minor scale (or Aeolian ♮7 scale) is a musical scale derived from the natural minor scale, with the minor seventh degree raised by one semitone to a major seventh, [2] [3] [4] creating an augmented second between the sixth and seventh degrees.
The minor seventh interval (between root and seventh degree, i.e.: { C B ♭} in { C E ♭ G ♭ B ♭} ) is enharmonically equivalent to an augmented sixth { C E ♭ G ♭ A ♯}. [19] Transposing this gives { A ♭ C ♭ D F ♯ }, a virtual minor version of the French augmented sixth chord. [ 20 ]
The harmonic seventh chord is a dominant seventh chord formed by a major triad plus a harmonic seventh interval. The harmonic seventh interval is a minor seventh tuned in the 7:4 pitch ratio, one of the possible "just ratios" defined for this interval in just intonation (slightly below the width of a minor seventh as tuned in equal temperament ...