Construction
A half-diminished arpeggio is a series of notes played in sequence that outline a half-diminished chord.
A half-diminished chord (also known as a minor 7 flat 5, written m7â™5 or ø) is constructed with the following intervals:
- Root
- Minor third (3 semitones above the root)
- Diminished fifth (6 semitones above the root, or a flat fifth)
- Minor seventh (10 semitones above the root)
Example: B Half-Diminished (Bø or Bm7â™5)
- Root (1) : B
- Minor third (b3) : D
- Diminished fifth (b5) : F
- Minor seventh (b7) : A
A B half-diminished arpeggio would consist of these notes played in sequence: B, D, F, A.
You can play them ascending, descending, or in any rhythmic or dynamic variation.
| Bm7b5 arpeggio |
B |
D |
F |
A |
| Formula |
1 |
b3 |
b5 |
b7 |
Musical Use
Half-diminished arpeggios are often used in jazz, classical, and other genres, especially to create tension or in chord progressions leading to resolutions, such as the iiø7 chord in a minor ii-V-I progression.