To decide the name the chord quality, each step below will use note intervals to calculate how many half-tones / semitones / piano keys between the root and the 3rd, 5th and 7th notes.). Should each 7th chord that we build be called diminished, half-diminished, minor minor-major, dominant, major, augmented, or augmented-major ?Įvery 7th chord must have one of these quality names. This pattern is repeated for all 7 notes in the scale, resulting in 7 seventh chords.Īlthough the above method identifies each 7th chord notes from the scale used, it does not identify the complete chord name including its quality. the 1st, 3rd, 5th and 7th positions relative to that 2nd root note. The second 7th chord below will repeat this, but this time starting on the 2nd note, so its notes will be Bb, Db, F and Ab - ie. Identifying the 4 notes in the chordħth chords are built using the 1st, 3rd, 5th, and 7th notes of a scale, so the first 7th chord below will constructed a chord using notes Ab, C, Eb and G. The 7th chord will be built using only the notes of the scale we are interested in. Starting from the 1st scale note, each lesson step below will take each note in turn and construct a 7th chord using that note as the root / starting note of that chord. The piano keyboard below contains the notes of the Ab major scale. This step shows the scale note names that will be used to construct all 7th chords that harmonize with those scale notes. G half-diminished 7th chord in 3rd inversion G half-diminished 7th chord in 2nd inversion G half-diminished 7th chord in 1st inversion G half-diminished 7th chord in root position The half-diminished symbol ' ø' is placed after the roman numerals to indicate this is a half-diminished 7th chord.Ĭhord names for A-flat major chord 7 Chord position Just like a minor chord, the half-diminished 7th chord is constructed using a minor third interval, so the roman numeral is shown in lower case. The roman numeral for number 7 is ' vii', and is used to indicate this is the 7th chord in the scale. This subtonic 7th chords root / starting note is the 7th note (or scale degree) of the Ab major scale. The A-flat major chord vii ø 7 is the G half-dim7 chord, and contains the notes G, Bb, Db, and F. This step shows the subtonic 7th chord of the A-flat major scale.
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