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B flat thirteenth chord (Bb13) on piano

The B flat thirteenth chord (Bb13) on piano has 6 notes: B flat, D, F, A flat, C, and G (B♭, D, F, A♭, C, G). On the keyboard below, the root (B flat) has the strongest color; each key shows the note name and the degree.

Notes
B♭DFA♭CG
Formula
135♭7913

How to play Bb13 on piano

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

Bb13 chord (B flat thirteenth) on piano, root position: keys Bb, D, F, Ab, C, G

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

Bb13 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 (Bb13/D)

    Bb13/D: D (3) in the bass

    Bb13/D chord (B flat thirteenth) on piano, 1st inversion: keys D, F, G, Ab, Bb, C

    From low to high: D F G A♭ B♭ C

  2. 2nd inversion (Bb13/F)

    Bb13/F: F (5) in the bass

    Bb13/F chord (B flat thirteenth) on piano, 2nd inversion: keys F, G, Ab, Bb, C, D

    From low to high: F G A♭ B♭ C D

  3. 3rd inversion (Bb13/Ab)

    Bb13/Ab: A flat (♭7) in the bass

    Bb13/Ab chord (B flat thirteenth) on piano, 3rd inversion: keys Ab, Bb, C, D, F, G

    From low to high: A♭ B♭ C D F G

Notes and intervals of Bb13

Bb13 (B flat thirteenth) is built from 6 notes. Each one fills a degree of the chord:

  • B♭ · 1 · root
  • D · 3 · major third
  • F · 5 · perfect fifth
  • A♭ · ♭7 · minor seventh
  • C · 9 · ninth
  • G · 13 · thirteenth

About the thirteenth chord

A dominant chord with the 13th: the 3rd and the 7th carry the tension, the 13th adds sparkle. The 11th is left out (it would clash with the 3rd), and the 5th and 9th are often dropped: the leanest shape is 1, 3, ♭7 and 13. It is the dominant of swing, blues, funk and samba-jazz; Brazilian chord charts write it 7(13).

Other B flat chords

Thirteenth: other roots

Frequently asked questions

What are the notes of the Bb13 chord on piano?

Bb13 (B flat thirteenth) has the notes B♭, D, F, A♭, C, G. The formula is 1 · 3 · 5 · ♭7 · 9 · 13: root, major third, perfect fifth, minor seventh, ninth, thirteenth.

How do you play Bb13 on piano?

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

What are the inversions of Bb13?

1st inversion (Bb13/D): D F G A♭ B♭ C; 2nd inversion (Bb13/F): F G A♭ B♭ C D; 3rd inversion (Bb13/Ab): A♭ B♭ C D F G.

What does Bb13 mean?

Bb13 is the chord symbol for B flat thirteenth. A dominant chord with the 13th: the 3rd and the 7th carry the tension, the 13th adds sparkle. The 11th is left out (it would clash with the 3rd), and the 5th and 9th are often dropped: the leanest shape is 1, 3, ♭7 and 13. It is the dominant of swing, blues, funk and samba-jazz; Brazilian chord charts write it 7(13).

Is the Bb13 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.

Bb13 on other instruments

All piano chords