Extended Chords
Main article: Extended chord- See also Jazz and pop notation for extended chords
Extended chords are triads with further tertian notes added beyond the seventh; the ninth, eleventh, and thirteenth chords. After the thirteenth any notes added in thirds will duplicate notes elsewhere in the chord: all seven notes of the scale are present in the chord and further added notes will not give new pitch classes. Such chords may be constructed only by using notes that lie outside the diatonic seven-note scale (See #Altered chords below).
| Components (chord and intervals) | Chord symbol | Audio | ||||
|---|---|---|---|---|---|---|
| Dominant ninth | dominant seventh chord | major ninth | - | - | C9 | Play |
| Dominant eleventh | dominant seventh chord |
major ninth | perfect eleventh | - | C11 | Play |
| Dominant thirteenth | dominant seventh chord | major ninth | perfect eleventh |
major thirteenth | C13 | Play |
Other extended chords follow similar rules, so that for example maj9, maj11, and maj13 contain major seventh chords rather than dominant seventh chords, while min9, min11, and min13 contain minor seventh chords.
Read more about this topic: Chord (music)
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