Bass chord companion
Learn the D Add 9 chord on bass with chord tones, intervals, playable arpeggios, and fretboard maps.
Play these tones one at a time to outline the chord. The maps show the complete formula; the numbered exercises give an ascending path, including extensions in their written octave.
Standard four-string bass: E1 – A1 – D2 – G2. String 4 is low E; string 1 is high G. Fingers 1–4 are index through little finger; 0 is open. Use comfortable hand positions and shift where indicated.
D Add 9 complete chord-tone map around string 4, fret 10. Choose individual tones for a bass line.
Follow steps 1–4 below. Keep one hand position.
| Step | Degree | Note | String / fret | Finger | Position |
|---|---|---|---|---|---|
| 1 | 1 | D2 | 4 / 10 | 4 | Fret 7 |
| 2 | 3 | F#2 | 3 / 9 | 3 | Fret 7 |
| 3 | 5 | A2 | 2 / 7 | 1 | Fret 7 |
| 4 | 9 | E3 | 1 / 9 | 3 | Fret 7 |
D Add 9 complete chord-tone map around string 3, fret 5. Choose individual tones for a bass line.
Follow steps 1–4 below. This path uses 1 marked position shift.
| Step | Degree | Note | String / fret | Finger | Position |
|---|---|---|---|---|---|
| 1 | 1 | D2 | 3 / 5 | 1 | Fret 5 |
| 2 | 3 | F#2 | 3 / 9 | 4 | Shift to 6 |
| 3 | 5 | A2 | 2 / 7 | 2 | Fret 6 |
| 4 | 9 | E3 | 1 / 9 | 4 | Fret 6 |
Every D Add 9 Chord chord tone across the neck, with roots highlighted for quick orientation.
Frets 0–24. Select a position or tap a note to hear it.
Try these progressions to hear the harmony in context. On bass, outline each chord with individual target tones.
This is the core major-key movement behind blues, rock, country, and pop progressions.
A familiar pop progression that balances a stable tonic with relative minor color.
| Degree | Interval | Note |
|---|---|---|
| 1 | Root | D |
| 3 | M3 | F# |
| 5 | P5 | A |
| 9 | M9 | E |
1 – 3 – 5 – 9
Compound degrees retain their names: 9, 11, and 13 are extensions. A voicing may place their pitches in a closer register.