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In music, a minor seventh chord is a seventh chord composed of a root note, a minor third, a perfect fifth, and a minor seventh (1, ♭ 3, 5, ♭ 7). In other words, one could think of it as a minor triad with a minor seventh attached to it. [2] For example, the minor seventh chord built on A, commonly written as A− 7, has pitches A-C-E-G:
Scales are named after their tonics: for instance, the tonic of the C major scale is the note C. The triad formed on the tonic note, the tonic chord, is thus the most significant chord in these styles of music. In Roman numeral analysis, the tonic chord is typically symbolized by the Roman numeral "I" if it is major and by "i" if it is minor.
Half-diminished seventh chords are often symbolized as a circle with a diagonal line through it, as in B ø 7 or simply B ø. It also can be represented as a minor seventh chord with a superscript "♭ 5" (sometimes enclosed in parentheses). The terms and symbols for this chord break expectations that derive from the usual system of chord ...
The chord occurs on the tonic when harmonizing the harmonic minor scale in seventh chords. That is, the first, third, fifth, and seventh scale degrees of the harmonic minor scale form a minor major seventh chord, as shown below.
This simple chord progression with tonic substitutes could become iii–ii–V–vi or, with chord names, "E minor–D minor–G Major–A minor". Given the overlap in notes between the original tonic chords and the chord substitutes (for example, C major is the notes "C, E, and G", and "E minor" is the notes "E, G and B"), the melody is likely ...
The jazz minor scale contains all of the altered notes of the dominant seventh chord whose root is a semitone below the scale's tonic: "In other words to find the correct jazz minor scale for any dominant 7th chord simply use the scale whose tonic note is a half step higher than the root of the chord."
Diminished seventh chord (leading-tone and secondary chord) Play ... Minor Tonic: Play ...
In minor, a seventh chord built on the supertonic yields a half-diminished seventh chord, which is a very strong predominant chord. Due to what is considered the harsh nature of root position diminished chords, the ii ø chord most often appears in first inversion.