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C♭ Dominant 7th Sharp 11

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C♭7♯11
C♭ – E♭ – F – G♭ – B♭♭
Formula:R-M3-A4-P5-m7
Intervals:P1-M3-A4-P5-m7
Scale Degrees:1-3-#4-5-b7

Introduction

Cb Dominant 7th Sharp 11 piano chord, root position — Cb, E, G, Bb, Gb
The Cb Dominant 7th Sharp 11 chord in root position on a piano keyboard, notes Cb, E, G, Bb, Gb.

The C♭ Dominant 7th Sharp 11 chord is a five-note chord made up of C♭, E♭, F, G♭, and B♭♭. It is built from a root, major third, augmented fourth, perfect fifth, and minor seventh.

Notes

Notes:C♭ – E♭ – F – G♭ – B♭♭

Key Signature

The key of Cb Dominant 7th Sharp 11 has 7 flats.

B♭E♭A♭D♭G♭C♭F♭

Order of flats

Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.

BEADGCF

Mnemonic: Battle Ends And Down Goes Charles’ Father

Chords in the Key of C♭ Major

These are the diatonic triads built on each degree of the C♭ major scale:

C
D
E
F
G
A
B
C
D
E
F
G
A
B
IB Major (major)
DegreeNumeralChordQuality
1IB MajorMajor
2iiD♭ MinorMinor
3iiiE♭ MinorMinor
4IVE MajorMajor
5VG♭ MajorMajor
6viA♭ MinorMinor
7vii°B♭ DiminishedDiminished

Theory: Intervals

Formula: R-M3-A4-P5-m7
Intervals: P1-M3-A4-P5-m7

The C♭ Dominant 7th Sharp 11 is built by stacking intervals from the root note. The formula R-M3-A4-P5-m7 describes the scale degrees used. The intervals P1-M3-A4-P5-m7 show the distance between each note in the chord.

C♭ Dominant 7th Sharp 11 — Frequently Asked Questions

What notes are in the Cb Dominant 7th Sharp 11 chord?
Cb7#11 is the enharmonic equivalent of B7#11. Same notes.
How does Cb7#11 differ from Cb7?
Adds the #11.
How is Cb7#11 used?
Musicians use B7#11 in practice.
What scale matches Cb7#11?
Cb Lydian Dominant (enharmonically B Lydian Dominant).
What songs use 7#11?
Sound identical regardless of spelling.
Do I need both spellings?
Learn B7#11 and understand the enharmonic relationship.

Practice Tips

  • Cb7#11 and B7#11 are enharmonic.
  • Translate to B7#11.
  • Keyboard notes identical.
  • Lydian Dominant sound.
  • Understanding both builds fluency.
  • The #11 adds brightness to any dominant.

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