Practice Lab

Guitar · scales and modes

C, E♭, G♭ and A diminished whole–half scale on guitar

The C, E♭, G♭ and A diminished whole–half scales have the same notes, so this one page covers all 4, written from C: C, D, E♭, F, G♭, A♭, A, B. Also called Messiaen 2. Messiaen's second mode (octatonic), whole–half form.

C diminished whole–half: notes, degrees and the semitones to the next note
NoteCDE♭FG♭A♭AB
Degree12♭34♭5♭667
Step21212121

C diminished whole–half on the whole neck

Every C diminished whole–half note from the open strings to fret 15, in standard E tuning (E A D G B E), by name; by degree under "Show more".

C diminished whole–half scale, note names, frets 0 to 15F2Gb2Ab2A2B2C3D3Eb3F3Gb3A2B2C3D3Eb3F3Gb3Ab3A3B3C4D3Eb3F3Gb3Ab3A3B3C4D4Eb4F4Ab3A3B3C4D4Eb4F4Gb4Ab4A4B3C4D4Eb4F4Gb4Ab4A4B4C5D5F4Gb4Ab4A4B4C5D5Eb5F5Gb56E25A24D33G32B31E40123456789101112131415
  • C diminished whole–half
Note names
Show 1 more neck: by degreeShow less
C diminished whole–half scale, degrees, frets 0 to 154b5b66712b34b56712b34b5b66712b34b5b66712b34b66712b34b5b66712b34b5b667124b5b66712b34b56E25A24D33G32B31E40123456789101112131415
  • C diminished whole–half
Degrees

C diminished whole–half in 5 positions

The neck split into the hand positions Practice Lab practices, one for each place a C falls on a string, with the notes its scale run fingers there.

C diminished whole–half, position 1, frets 1 to 54b5b6712b34b5b66712b34b5b66E25A24D33G32B31E4012345
    Position 1: frets 1–5, 18 notes
    C diminished whole–half, position 2, frets 3 to 7b66712b34b5b6712b34b6676E25A24D33G32B31E434567
      Position 2: frets 3–7, 17 notes
      C diminished whole–half, position 3, frets 5 to 96712b34b66712b34b5b66716E25A24D33G32B31E456789
        Position 3: frets 5–9, 18 notes
        Show 2 more positionsShow less
        C diminished whole–half, position 4, frets 8 to 1212b34b5b6712b34b5b66712b36E25A24D33G32B31E489101112
          Position 4: frets 8–12, 18 notes
          C diminished whole–half, position 5, frets 10 to 142b34b66712b34b5b66712b346E25A24D33G32B31E41011121314
            Position 5: frets 10–14, 18 notes

            Triads in C diminished whole–half

            DegreeChordPages
            1CdimC diminished arpeggio
            2DD major arpeggio
            2DmD minor arpeggio
            2DdimD diminished arpeggio
            ♭3E♭dimD♯ diminished arpeggio
            4FF major arpeggio
            4FmF minor arpeggio
            4FdimF diminished arpeggio
            ♭5G♭dimF♯ diminished arpeggio
            ♭6A♭A♭ major arpeggio
            ♭6A♭mG♯ minor arpeggio
            ♭6A♭dimG♯ diminished arpeggio
            6AdimA diminished arpeggio
            7BB major arpeggio
            7BmB minor arpeggio
            7BdimB diminished arpeggio

            Seventh chords in C diminished whole–half

            DegreeChordPages
            1Cdim7Cdim7 arpeggio
            2Dm7Dm7 arpeggio · Dm7 drop 2 · Dm7 drop 3 · Dm7 drop 2 and 4
            2D7D7 arpeggio · D7 drop 2 · D7 drop 3 · D7 drop 2 and 4
            2Dm7♭5Dm7♭5 arpeggio · Dm7♭5 drop 2 · Dm7♭5 drop 3 · Dm7♭5 drop 2 and 4
            2Ddim7Ddim7 arpeggio
            2D–
            ♭3E♭dim7D♯dim7 arpeggio
            4Fm7Fm7 arpeggio · Fm7 drop 2 · Fm7 drop 3 · Fm7 drop 2 and 4
            4F7F7 arpeggio · F7 drop 2 · F7 drop 3 · F7 drop 2 and 4
            4Fm7♭5Fm7♭5 arpeggio · Fm7♭5 drop 2 · Fm7♭5 drop 3 · Fm7♭5 drop 2 and 4
            4Fdim7Fdim7 arpeggio
            4F–
            ♭5G♭dim7F♯dim7 arpeggio
            ♭6A♭m7G♯m7 arpeggio · G♯m7 drop 2 · G♯m7 drop 3 · G♯m7 drop 2 and 4
            ♭6A♭7A♭7 arpeggio · A♭7 drop 2 · A♭7 drop 3 · A♭7 drop 2 and 4
            ♭6A♭m7♭5G♯m7♭5 arpeggio · G♯m7♭5 drop 2 · G♯m7♭5 drop 3 · G♯m7♭5 drop 2 and 4
            ♭6A♭dim7G♯dim7 arpeggio
            ♭6A♭–
            6Adim7Adim7 arpeggio
            7Bm7Bm7 arpeggio · Bm7 drop 2 · Bm7 drop 3 · Bm7 drop 2 and 4
            7B7B7 arpeggio · B7 drop 2 · B7 drop 3 · B7 drop 2 and 4
            7Bm7♭5Bm7♭5 arpeggio · Bm7♭5 drop 2 · Bm7♭5 drop 3 · Bm7♭5 drop 2 and 4
            7Bdim7Bdim7 arpeggio
            7B–

            Same notes, other names

            These scales use exactly the notes of C diminished whole–half, starting from another root.

            Diminished whole–half in every key

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