Guitar Theory Studio
Scale

Eb Half-Whole Diminished Scale

The Eb half-whole diminished scale (also written D#) — Eb E Gb G A Bb C Db — with its intervals, the chords it fits and every position on the guitar neck.

Also written D# half-whole diminished. D# and Eb are the same pitch — Eb is the spelling in common use.

Eb Half-Whole Diminished Scale on the guitar fretboard13578910121415eBGDAEEGbGABbCDbEbEGbGCDbEbEGbGABbCDbGABbCDbEbEGbGABbEbEGbGABbCDbEbEABbCDbEbEGbGABbCEGbGABbCDbEbEGbG

Tap any note on the neck.

Swipe the neck sideways to see the higher frets.

Notes
Eb   E   Gb   G   A   Bb   C   Db
Intervals
1   b2   b3   3   #4   5   6   b7
Step pattern
H – W – H – W – H – W – H – W
Played over
Eb7   Gb7   A7   C7
Shape repeats every
3 frets
Open this in the fretboard tool →

Eb half-whole diminished scale notes and intervals

Eb half-whole diminished has 8 notes. Each is named by its distance from the root, which is the same in every key — learn the numbers once and every half-whole diminished scale reads the same.

Eb
1
root
E
b2
minor 2nd
Gb
b3
minor 3rd
G
3
major 3rd
A
#4
augmented 4th
Bb
5
perfect 5th
C
6
major 6th
Db
b7
minor 7th

Step pattern from the root: H – W – H – W – H – W – H – W (W is a whole step, two frets; H is a half step, one fret).

Scales it shares notes with:

Eb half-whole diminished scale positions on guitar — all 8

Three notes on every string gives Eb half-whole diminished eight positions, one starting on each note of the scale, that together cover frets 0 to 15. The scale repeats itself every minor third, so the eight are only two shapes: positions 1, 3, 5 and 7 are one, 2, 4, 6 and 8 the other, and moving either one three frets up or down gives the same notes again. Learn the two and slide them.

Position 1 — frets 9–14

Eb half-whole diminished scale, position 1, frets 9–1489101112131415EbEGbGABbCDbEbEGbGABbCDbEbE

Position 2 — frets 11–15

Eb half-whole diminished scale, position 2, frets 11–1510111213141516EGbGABbCDbEbEGbGABbCDbEbEGb

Position 3 — frets 0–5

Eb half-whole diminished scale, position 3, frets 0–50123456GbGABbCDbEbEGbGABbCDbEbEGbG

Position 4 — frets 2–6

Eb half-whole diminished scale, position 4, frets 2–61234567GABbCDbEbEGbGABbCDbEbEGbGA

Position 5 — frets 3–8

Eb half-whole diminished scale, position 5, frets 3–823456789ABbCDbEbEGbGABbCDbEbEGbGABb

Position 6 — frets 5–9

Eb half-whole diminished scale, position 6, frets 5–945678910BbCDbEbEGbGABbCDbEbEGbGABbC

Position 7 — frets 6–11

Eb half-whole diminished scale, position 7, frets 6–1156789101112CDbEbEGbGABbCDbEbEGbGABbCDb

Position 8 — frets 8–12

Eb half-whole diminished scale, position 8, frets 8–1278910111213DbEbEGbGABbCDbEbEGbGABbCDbEb

Chords to play Eb half-whole diminished over

Eb half-whole diminished is the scale for Eb7 with an altered 9th. It holds the whole Eb7 chord (Eb G Bb Db) and adds the b9, #9, #11 and 13 (E Gb A C), the tensions that make a dominant chord pull hard to the next one. Because the scale repeats every minor third, the same eight notes fit Gb7, A7 and C7 just as well.

Play the Eb7 arpeggio inside the scale → The Practice Loop keeps only the chord’s notes in each position, so you hear what the rest of the scale is decorating.

How to practice the Eb half-whole diminished scale

  1. Start with position 3 at frets 0–5, slowly, until every note lands on the click. The loop keeps the shape and the tempo for you.
  2. Slide the shape: position 5 is the same fingering 3 frets higher, and the same notes. Play one, then the other, and the move is the scale.
  3. Climb 4 notes at a time, two notes up each time: each group starts a minor third above the last, the same step the scale repeats by.
  4. Switch the same position to the Eb7 arpeggio, the chord’s notes alone, then back to the scale.
  5. See every Eb half-whole diminished note across the whole neck on the Fretboard, and find each box again an octave up.

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