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B flat ninth suspended fourth chord (Bb9sus4) on piano

The B flat ninth suspended fourth chord (Bb9sus4) on piano has 5 notes: B flat, E flat, F, A flat, and C (B♭, E♭, F, A♭, C). On the keyboard below, the root (B flat) has the strongest color; each key shows the note name and the degree.

Notes
B♭E♭FA♭C
Formula
145♭79

How to play Bb9sus4 on piano

Root position · From low to high: B♭ E♭ F A♭ C

Bb9sus4 chord (B flat ninth suspended fourth) on piano, root position: keys Bb, Eb, F, Ab, C

The small dot marks middle C (C4). Tap a key to hear the note.

Bb9sus4 chord inversions

Inverting a chord means putting another of its notes in the bass (the lowest key) without changing the notes. Inversions shorten the way your hand travels from one chord to the next and slightly change the color of the sound.

  1. 1st inversion (Bb9sus4/Eb)

    Bb9sus4/Eb: E flat (4) in the bass

    Bb9sus4/Eb chord (B flat ninth suspended fourth) on piano, 1st inversion: keys Eb, F, Ab, Bb, C

    From low to high: E♭ F A♭ B♭ C

  2. 2nd inversion (Bb9sus4/F)

    Bb9sus4/F: F (5) in the bass

    Bb9sus4/F chord (B flat ninth suspended fourth) on piano, 2nd inversion: keys F, Ab, Bb, C, Eb

    From low to high: F A♭ B♭ C E♭

  3. 3rd inversion (Bb9sus4/Ab)

    Bb9sus4/Ab: A flat (♭7) in the bass

    Bb9sus4/Ab chord (B flat ninth suspended fourth) on piano, 3rd inversion: keys Ab, Bb, C, Eb, F

    From low to high: A♭ B♭ C E♭ F

Notes and intervals of Bb9sus4

Bb9sus4 (B flat ninth suspended fourth) is built from 5 notes. Each one fills a degree of the chord:

  • B♭ · 1 · root
  • E♭ · 4 · perfect fourth
  • F · 5 · perfect fifth
  • A♭ · ♭7 · minor seventh
  • C · 9 · ninth

About the ninth suspended fourth chord

A suspended dominant with a ninth: the 4th in place of the 3rd and the 9th on top. Soft and ambiguous, it is one of the most used sounds of modern jazz, soul and gospel. It has the same notes as an eleventh chord played without the 3rd; without the 5th, it is the triad on the ♭7 over the root (B♭/C for C9sus4).

Other B flat chords

Ninth suspended fourth: other roots

Frequently asked questions

What are the notes of the Bb9sus4 chord on piano?

Bb9sus4 (B flat ninth suspended fourth) has the notes B♭, E♭, F, A♭, C. The formula is 1 · 4 · 5 · ♭7 · 9: root, perfect fourth, perfect fifth, minor seventh, ninth.

How do you play Bb9sus4 on piano?

Find the B flat key and add the other notes above it: B♭, E♭, F, A♭, C. Play them all together.

What are the inversions of Bb9sus4?

1st inversion (Bb9sus4/Eb): E♭ F A♭ B♭ C; 2nd inversion (Bb9sus4/F): F A♭ B♭ C E♭; 3rd inversion (Bb9sus4/Ab): A♭ B♭ C E♭ F.

What does Bb9sus4 mean?

Bb9sus4 is the chord symbol for B flat ninth suspended fourth. A suspended dominant with a ninth: the 4th in place of the 3rd and the 9th on top. Soft and ambiguous, it is one of the most used sounds of modern jazz, soul and gospel. It has the same notes as an eleventh chord played without the 3rd; without the 5th, it is the triad on the ♭7 over the root (B♭/C for C9sus4).

Is the Bb9sus4 chord the same on piano and keyboard?

Yes. The notes and inversions are the same on any keyboard instrument: acoustic piano, digital piano, keyboard, organ or synthesizer.

Bb9sus4 on other instruments

All piano chords