C♭ Dominant 7th Sharp 11
Listen plays the chord. Play Along lights up each note in order so you can follow.
Introduction

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
Key Signature
The key of Cb Dominant 7th Sharp 11 has 7 flats.
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.
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:
Theory: Intervals
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?
How does Cb7#11 differ from Cb7?
How is Cb7#11 used?
What scale matches Cb7#11?
What songs use 7#11?
Do I need both spellings?
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.