Map it slowly
Find D♯ on string 5 at fret 6. Play string 5, fret 6; string 5, fret 9; string 4, fret 7; string 3, fret 6; string 3, fret 8. Use a relaxed position and release pressure between repetitions. String 1 is high E.
Arpeggio · D♯m7♭5 · Guitar
The D♯m7♭5 arpeggio is D♯ – F♯ – A – C♯ — chord tones 1 ♭3 ♭5 ♭7. D♯m7♭5 is the iiø chord of a minor ii–V–i; its sound is dark, unstable, leading. Below, every D♯, F♯, A, C♯ on the fretboard is marked, with the root in gold. Press play to hear a one-octave arpeggio, or tap any note.
Visualizer
Guitar · standard tuning
Piano
Play loops the arpeggio up and down one octave (switch Loop off for a single pass) in the position starting at fret 6. 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
Find D♯ on string 5 at fret 6. Play string 5, fret 6; string 5, fret 9; string 4, fret 7; string 3, fret 6; string 3, fret 8. Use a relaxed position and release pressure between repetitions. String 1 is high E.
Play D♯ – F♯ – A – C♯ in quarter notes at 60 bpm. Repeat starting from F♯, wrapping back to D♯. Do not speed up until every attack is even.
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♯m7♭5 has the colour “dark, unstable, leading”. Name the degrees as you play, so you can recognize the sound in another key rather than remembering only a shape.
Understand the sound
Compare the flat fifth with a perfect fifth while keeping the other notes fixed. That one change turns a minor seventh into a half-diminished chord.
Here the third is F♯, and degree ♭7 is C♯. Play D♯ in the bass and compare these voices individually before combining them.
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.
Start with D♯ on string 5, fret 6. The next note F♯ is on string 5, fret 9. 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♯. Then play a two-bar phrase from memory and leave two bars of silence.
On piano
Reference
| Chord tone | Note | Interval from D♯ |
|---|---|---|
| 1 | D♯ | unison (0 semitones) |
| ♭3 | F♯ | minor 3rd (3 semitones) |
| ♭5 | A | diminished 5th (6 semitones) |
| ♭7 | C♯ | minor 7th (10 semitones) |
Goes with: D♯ Locrian (D♯ E F♯ G♯ A B C♯). Voicings: D♯m7♭5 voicings on guitar.
Take it to the bandstand.Practice Radio streams endless changes to play the D♯m7♭5 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♯ – F♯ – A – C♯. As chord tones: 1 ♭3 ♭5 ♭7. Played one after another instead of together, that is the arpeggio.
D♯m7♭5 is the iiø chord of a minor ii–V–i. Its character is dark, unstable, leading.
D♯ Locrian (D♯ E F♯ G♯ A B C♯) — the arpeggio is the skeleton of that scale, so practise them together.
Start on the root D♯ on the A string at fret 6 and play A-string fret 6, A-string fret 9, D-string fret 7, G-string fret 6, G-string fret 8. Then play it descending, then in eighth notes with a metronome, then use it in a short phrase over a suitable chord.
Keep going
Same arpeggio on piano · Half-diminished (m7♭5) hub · chord-scale theory.
Other arpeggios from D♯