B♭ 7♯9♯11
Listen plays the chord. Play Along lights up each note in order so you can follow.
Introduction
The B♭ 7♯9♯11 chord is a six-note chord made up of B♭, D, F, A♭, C♯, and E. It is built from a root, major third, perfect fifth, minor seventh, augmented ninth, and augmented eleventh.
Notes
Key Signature
The key of Bb 7♯9♯11 has 2 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 B♭ Major
These are the diatonic triads built on each degree of the B♭ major scale:
Theory: Intervals
The B♭ 7♯9♯11 is built by stacking intervals from the root note. The formula R-M3-P5-m7-A9-A11 describes the scale degrees used. The intervals P1-M3-P5-m7-A9-A11 show the distance between each note in the chord.
B♭ 7♯9♯11 — Frequently Asked Questions
What notes are in the Bb 7♯9♯11 chord?
How is Bb7♯9♯11 used in music?
What is the scale degree formula for Bb7♯9♯11?
Practice Tips
- Start by placing your thumb on Bb and spacing remaining fingers across the chord.
- Practice Bb7♯9♯11 slowly with separate hands before combining.
- Listen carefully to the tension created by the altered tones in this chord.
- Try voicing Bb7♯9♯11 in different octaves to find the most comfortable position.
- Resolve Bb7♯9♯11 to a nearby chord to hear its function in context.