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C♯ composite blues scale

The C♯ composite blues scale is made of the notes C♯, D♯, E, E♯, F♯, G, G♯, A♯, B. It has 9 notes; compared with the major scale its formula is 1 2 ♭3 3 4 ♭5 5 6 ♭7.

Blues · 9 notes

Note names
  1. 1C♯
  2. 2D♯
  3. ♭3E
  4. 3E♯
  5. 4F♯
  6. ♭5G
  7. 5G♯
  8. 6A♯
  9. ♭7B

PatternW – H – H – H – H – H – W – H – W(W = whole step, H = half step)

The pentatonic scales with one extra passing note, the blue note. Degrees are shown relative to the major scale: ♭3 is the third lowered by a half step, ♯4 the fourth raised.

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Mode and chords

It joins the major and minor blues in a nine-note scale: minor and major 3rd, diminished and perfect 5th. It is the typical material of blues improvisers.

Used overC♯7C♯9C♯m7C♯m7♭5

Put it into practice

The scale played in thirds over one octave: one of the exercises MEG generates from this scale.

This scale is not part of the demo: in the MEG app you will find it in every key, with 24 patterns.

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Frequently asked questions

What are the notes of the C♯ composite blues scale?
The notes are C♯, D♯, E, E♯, F♯, G, G♯, A♯, B.
What is the pattern of the C♯ composite blues scale?
The sequence of steps is W – H – H – H – H – H – W – H – W (W = whole step, H = half step); compared with the major scale the degrees are 1 2 ♭3 3 4 ♭5 5 6 ♭7.
Which chords is the C♯ composite blues scale used over?
It is used over C♯7, C♯9, C♯m7, C♯m7♭5: the chords on the tonic made of the notes of the scale.

Texts and tools by , professional musician and developer. Last updated: October 9, 2026.