Map it slowly
Find D♭ on string 5 at fret 4. Play string 5, fret 4; string 5, fret 6; string 5, fret 8; string 4, fret 6; string 3, fret 5. Use a relaxed position and release pressure between repetitions. String 1 is high E.
Arpeggio · D♭△9 · Guitar
D♭△9 arpeggio on guitar
The D♭△9 arpeggio is D♭ – F – A♭ – C – E♭ — chord tones 1 3 5 7 9. D♭△9 is a lush tonic chord in ballads; its sound is wide, luminous. Below, every D♭, F, A♭, C, E♭ on the fretboard is marked, with the root in gold. Press play to hear a one-octave arpeggio, or tap any note.
Visualizer
D♭△9 on the fretboard.
Guitar · standard tuning
Piano
RootChord toneBeing played
Tempo100 bpm
Show
Sound
Play loops the arpeggio up and down one octave (switch Loop off for a single pass) in the position starting at fret 4. Tap any marked note to hear it. “Show” switches or combines the fretboard and keyboard; “Sound” picks the instrument you hear. Audio is synthesized in the browser.
Your next 10 minutes
Make D♭ Major 9th part of your playing
Make a short phrase
Play D♭ – F – A♭ – C – E♭ in quarter notes at 60 bpm. Repeat starting from F, wrapping back to D♭. Do not speed up until every attack is even.
Hear it in context
Alternate F and C above a sustained D♭. These are degree 3 and 7. End a four-bar phrase on either one instead of always returning to the root.
Listen for this: D♭△9 has the colour “wide, luminous”. Name the degrees as you play, so you can recognize the sound in another key rather than remembering only a shape.
Understand the sound
D♭△9: from a pattern to a musical choice
What gives D♭△9 its identity?
The ninth adds colour above a major-seventh foundation. Separate the upper voice from the bass and compare close and open spacing.
Here the third is F, and degree 7 is C. Play D♭ in the bass and compare these voices individually before combining them.
Turn the arpeggio into a melody
Try F – A♭ – C – D♭ as quarter notes, then repeat the first note and omit the last. The second phrase uses the same harmony with a different shape.
Sound the strings separately before playing them together. If a note is muted, adjust the finger angle instead of squeezing harder.
Your guitar checkpoint
Start with D♭ on string 5, fret 4. The next note F is on string 5, fret 6. Name both notes aloud before playing, then find the same two pitches in another octave.
Before moving on, close the diagram and name the notes: D♭ · F · A♭ · C · E♭. Then play a two-bar phrase from memory and leave two bars of silence.
On piano
D♭△9 on the keyboard.
Reference
D♭△9 — chord tones & intervals.
| Chord tone | Note | Interval from D♭ |
|---|---|---|
| 1 | D♭ | unison (0 semitones) |
| 3 | F | major 3rd (4 semitones) |
| 5 | A♭ | perfect 5th (7 semitones) |
| 7 | C | major 7th (11 semitones) |
| 9 | E♭ | major 9th (14 semitones) |
Goes with: D♭ Major (Ionian) (D♭ E♭ F G♭ A♭ B♭ C). Voicings: see the four-note chord voicings in the chord library.
Take it to the bandstand.Practice Radio streams endless changes to play the D♭△9 arpeggio over through all twelve keys, with the chord and scale shown live — plus ear-training and call & response modes.
▶ Open Practice RadioCommon questions
D♭△9 arpeggio FAQ.
What notes are in a D♭△9 arpeggio?
D♭ – F – A♭ – C – E♭. As chord tones: 1 3 5 7 9. Played one after another instead of together, that is the arpeggio.
What is a D♭△9 chord used for?
D♭△9 is a lush tonic chord in ballads. Its character is wide, luminous.
Which scale goes with D♭△9?
D♭ Major (D♭ E♭ F G♭ A♭ B♭ C) — the arpeggio is the skeleton of that scale, so practise them together.
How do I practise the D♭△9 arpeggio on guitar?
Start on the root D♭ on the A string at fret 4 and play A-string fret 4, A-string fret 6, A-string fret 8, D-string fret 6, G-string fret 5, G-string fret 6. Then play it descending, then in eighth notes with a metronome, then use it in a short phrase over a suitable chord.
Keep going
Major 9th arpeggio in every other key.
Same arpeggio on piano · Major 9th hub · chord-scale theory.
Other arpeggios from D♭