C
Notes: C, D, Eb, F, Gb, Ab, A, B, C
Diminished Scales
The Diminished Scale is built upon two diminished seventh chords. In the C Diminished Scale this would be C - Eb - Gb - A (Cdim7) and D - F - Ab - B (Ddim7). This scale is primarily used in jazz music and works well together with alternate seventh chords.
The Diminished Scale is also referred to as the Whole-half Scale since it is constructed by every second whole and half steps. It should also be noticed that it is a symmetrical scale, and an octatonic scale (it is actually sometimes referred to as the Octatonic Scale). It is close related to the Half-whole Diminished scale (a.k.a. the Dominant Diminished Scale) and should be separated from the Diminished Whole Tone Scale.
C# / Db
Notes: C#, D#, E, F#, G, A, A#, C, C#
D
Notes: D, E, F, G, Ab, Bb, B, C#, D
D# /Eb
Notes: D#, F, F#, G#, A, B, C, D, D#
E
Notes: E, F#, G, A, Bb, C, C#, D#, E
F
Notes: F, G, Ab, Bb, B, C#, D, E, F
F# / Gb
Notes: F#, G#, A, B, C, D, D#, F, F#
G
Notes: G, A, Bb, C, C#, D#, E, F#, G
G# / Ab
Notes: G#, A#, B, C#, D, E, F, G, G#
A
Notes: A, B, C, D, Eb, F, Gb, Ab, A
A# / Bb
Notes: A#, C, C#, D#, E, F#, G, A, A#
B
Notes: B, C#, D, E, F, G, Ab, Bb, B
Diminished Scales overview
C: C, D, Eb, F, Gb, Ab, A, B, C
C#/Db: C#, D#, E, F#, G, A, A#, C, C# / Db, Eb, Fb, Gb, G, A, Bb, C, Db
D: D, E, F, G, Ab, Bb, B, C#, D
D#/Eb: D#, F, F#, G#, A, B, C, D, D# / Eb, F, Gb, Ab, A, B, C, D, Eb
E: E, F#, G, A, Bb, C, C#, D#, E
F: F, G, Ab, Bb, B, C#, D, E, F
F#/Gb: F#, G#, A, B, C, D, D#, F, F# / Gb, Ab, A, B, C, D, Eb, F, Gb
G: G, A, Bb, C, C#, D#, E, F#, G
G#/Ab: G#, A#, B, C#, D, E, F, G, G# / Ab, Bb, Cb, Db, D, E, F, G, Ab
A: A, B, C, D, Eb, F, Gb, Ab, A
A#/Bb: A#, C, C#, D#, E, F#, G, A, A# / Bb, C, Db, Eb, E, Gb, G, A, Bb
B: B, C#, D, E, F, G, Ab, Bb, B
Intervals: 1, 2, b3, 4, b5, b6, 6, 7
Semi-notes: 2 - 1 - 2 - 1 - 2 - 1 - 2 - 1
Formula: Whole, Half, Whole, Half, Whole, Half, Whole, Half