Arpeggio · A°7 · Guitar
The A°7 arpeggio is A – C – E♭ – G♭ — chord tones 1 ♭3 ♭5 ?. A°7 is passing chords between diatonic chords, and as a 7♭9 without its root; its sound is symmetrical, restless. Below, every A, C, E♭, G♭ 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 5. 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.
Reference
| Chord tone | Note | Interval from A |
|---|---|---|
| 1 | A | unison (0 semitones) |
| ♭3 | C | minor 3rd (3 semitones) |
| ♭5 | E♭ | tritone (6 semitones) |
| ? | G♭ | major 6th (9 semitones) |
Goes with: A Diminished (whole–half) (A B C D E♭ F G♭ A♭). Voicings: A°7 voicings on guitar.
Common questions
A – C – E♭ – G♭. As chord tones: 1 ♭3 ♭5 ?. Played one after another instead of together, that is the arpeggio.
A°7 is passing chords between diatonic chords, and as a 7♭9 without its root. Its character is symmetrical, restless.
A Dim. W–H (A B C D E♭ F G♭ A♭) — the arpeggio is the skeleton of that scale, so practise them together.
Start on the root A on the low E string at fret 5 and play E-string fret 5, E-string fret 8, A-string fret 6, A-string fret 9, D-string fret 7. Then play it descending, then in eighth notes with a metronome, then over the passing chords between diatonic chords.
Keep going
Same arpeggio on piano · Diminished 7th hub · chord-scale theory.
Other arpeggios from A