The dominant ninth chord consists of the chord tones root (1), major third (3), perfect fifth (5), minor seventh (b7), and major ninth (9). In an A9 chord, this corresponds to the notes A, C#, E, G, B. It is a five-note chord that exists in four inversions:
- Root position with root in the bass
- 1. inversion with ninth (= second) in the bass
- 2. inversion with third in the bass
- 3. inversion with fifth in the bass
- 4. inversion with seventh in the bass
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Inversions of the dominant ninth chord
The dominant ninth chord consists of the chord tones root (1), major third (3), perfect fifth (5), minor seventh (b7), and major ninth (9). In an A9 chord, this corresponds to the notes A, C#, E, G, B. It is a five-note chord that exists in four inversions:
- Root position with root in the bass
- 1. inversion with ninth (= second) in the bass
- 2. inversion with third in the bass
- 3. inversion with fifth in the bass
- 4. inversion with seventh in the bass