In fact, these 7th chords are based on triad chords - the first 3 notes of any 7th chord are identical to a specific triad chord quality, with one extra note added to make it a 7th chord. It is these variations of the 3rd, 5th and 7th notes that give each one a distinctive sound for any given key (eg. Triad chord qualities using the 1st, 3rd, 5th and 7th scale notesĪll of these 7th chord qualities are based on the 1st, 3rd, 5th and 7th notes of the major scale piano diagram above.ĭepending on the chord quality, the 3rd, 5th and 7th scale note names of the major scale above might need to be adjusted up or down by one or more half-notes / semitones / piano keys.
7th chord qualitiesħth chords exist in eight different chord qualities, which are diminished, half-diminished, minor, minor-major, dominant, major, augmented, and augmented-major.Įach chord quality name is the name of the entire chord as a whole, not its individual notes (which will be covered later). Whereas a triad chord contains 3 notes, a 7th chord contains 4 notes that are played together or overlapping. This step defines a seventh chord, names the 7th chord qualities and identifies the notes that vary between them.
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