A Diminished (Whole-Half) Scale on Guitar — 1 Shape to Play the Whole Neck
A Diminished (Whole-Half) is a symmetric scale, built from a repeating interval pattern rather than the uneven step sizes of a traditional major or minor scale — its notes are A B C D Eb F F# G#, from the formula 1 2 b3 4 b5 b6 6 7. For this root it computes to 1 repeating shape.
A Diminished (Whole-Half) Scale Notes
| Degree | Note | Interval |
|---|---|---|
| 1 | A | 1 |
| 2 | B | 2 |
| 3 | C | b3 |
| 4 | D | 4 |
| 5 | Eb | b5 |
| 6 | F | b6 |
| 6 | F# | 6 |
| 7 | G# | 7 |
A Diminished (Whole-Half) Formula
Degree formula: 1 2 b3 4 b5 b6 6 7
Whole – Half – Whole – Half – Whole – Half – Whole – Half
A Diminished (Whole-Half) on the Guitar Fretboard
The notes of Diminished (Whole-Half) repeat across the guitar fretboard in connected positions. Use the shape below to identify root notes, scale degrees, and neighboring shapes.
- Frets 1–11 (span 10 frets)
- Lowest note D, highest note F#
- 1 A root note, on the D string (fret 7)
How to practice this shape
- Start on the root — A at fret 7 on the D string. Play up to the highest note in the shape, then back down, staying inside frets 1–11.
- Your hand shifts 5 times as you cross strings: E→A (-2), A→D (-2), D→G (-2), G→B (-1), B→E (-2). Those crossings — not the notes — are what this position is really asking you to learn.
- Once it feels automatic, move it up the neck: this scale needs only 1 shape, so the same fingering repeats everywhere.
What Gives A Diminished (Whole-Half) Its Sound?
The characteristic sound of A Diminished (Whole-Half) comes from its minor 3rd and diminished 5th.
Diatonic chords
These are the 6 chords built from A Diminished (Whole-Half)'s own notes — the ones that will sound like they belong when you're writing a progression, backing a melody, or jamming in this key. The Roman numeral shows each chord's role in the key: capital for major, lowercase for minor, ° for diminished, + for augmented. Not every scale produces a clean chord on every degree — where that happens, we show it honestly instead of forcing a name that doesn't fit.
A Diminished (Whole-Half) vs A Diminished (Half-Whole)
A Diminished (Whole-Half) and A Diminished (Half-Whole) differ on 6 degrees: the 2nd (2 vs b2), the 3rd (b3 vs 3), the 4th (4 vs #4), the 5th (b5 vs 5), the 6th (b6 vs 6), the 7th (7 vs b7).
A Diminished (Whole-Half) FAQ
A Diminished (Whole-Half) contains the notes A, B, C, D, Eb, F, F#, G#.
A Diminished (Whole-Half) is built from a repeating interval pattern rather than the uneven step sizes of a major or minor scale.
A Diminished (Whole-Half)'s formula is 1 2 b3 4 b5 b6 6 7.