#Lilypond chords seventh plus
The harmonic seventh chord is a dominant seventh chord formed by a major triad plus a harmonic seventh interval. Tertian seventh chords used in Western music The less commonly found tertian is the minor/major seventh. The five commonly found in western music are the major seventh, the minor (or minor/minor) seventh, the dominant (or major/minor) seventh, the half-diminished seventh, and the diminished seventh, technically not a tertian chord, with its diminished third, but often listed with the tertian chords as commonly found. Since there are 3 third intervals in a seventh chord (4 notes) and each can be major or minor, there are 8 possible combinations. The most common chords are tertian, constructed using a sequence of major thirds (spanning 4 semitones) and/or minor thirds (3 semitones). For symbols used for seventh chords, see also Popular music symbols § Seventh chords. a "C" chord is a "C major triad", and a "C 7" chord is a " C major/minor seventh chord", also known as a "C dominant seventh chord"). When the type is not specified at all, the triad is assumed to be major, and the seventh is understood as a minor seventh (e.g. Additionally, half-diminished stands for diminished/minor, and dominant stands for major/minor. This rule is not valid for augmented chords: since the augmented/augmented chord is not commonly used, the abbreviation augmented is used for augmented/minor, rather than augmented/augmented. For instance, a major/major seventh is generally referred to as a major seventh.
they are both major, minor, or diminished), the name is shortened. When the triad type and seventh type are identical (i.e. Most textbooks name these chords formally by the type of triad and type of seventh hence, a chord consisting of a major triad and a minor seventh above the root is referred to as a major/minor seventh chord.
"A ranking by frequency of the seventh chords in C major would be approximately that shown."
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