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A piano reference: chords, scales, theory. Full MIDI.

B♭ 13sus4

Notes: B♭ – E♭ – F – A♭ – C – G
Degrees: 1 – 4 – 5 – ♭7 – 9 – 13Also written: B♭13sus4

The B♭ 13sus4 chord is a six-note chord made up of B♭, E♭, F, A♭, C, and G.

B♭ 13sus4 chord: B♭, E♭, F, A♭, C, G

It is built from a root, perfect fourth, perfect fifth, minor seventh, major ninth, and major thirteenth.

A dominant 13th with the 3rd replaced by the 4th: open and modal, common in spiritual jazz.

A♯ 13sus4
This is the same chord as A♯ 13sus4: the same keys on the keyboard, spelled with sharps.

Construction

B♭ 13sus4 = Root + Perfect 4th + Perfect 5th + Minor 7th + Major 2nd + Major 6th = B♭, E♭, F, A♭, C, G
NoteIntervalDegree
B♭Root1
E♭Perfect 4th11
FPerfect 5th5
A♭Minor 7th♭7
CMajor 2nd9
GMajor 6th13

Same Notes, Other Names

The notes B♭ – E♭ – F – A♭ – C – G aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:

B♭ 13sus4 : Frequently Asked Questions

What is the B♭ 13sus4 chord on piano?
The B♭ 13sus4 chord contains the notes B♭ – E♭ – F – A♭ – C – G. On piano, play these notes together to sound the chord.
What notes are in the Bb 13sus4 chord?
The Bb 13sus4 chord (Bb13sus4) contains 6 notes: Bb, Eb, F, Ab, C, G. Formula: R-P4-P5-m7-M9-M13.
How is Bb13sus4 used in music?
Bb13sus4 is used in jazz, fusion, and contemporary music to add harmonic color. It appears as a dominant or tonic chord depending on context.
What is the scale degree formula for Bb13sus4?
Bb13sus4 uses scale degrees 1-4-5-b7-9-13, giving it its distinctive sound.

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