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New Released in April 2026

B Flat Augmented Chord on Piano (Bbaug)

To play Bbaug on the piano, press Bb, D, F# together. Start from Bb and move the fifth up a semitone: that one key turns it into Bbaug. Here is where Bbaug comes from, where it resolves and how to play it with both hands.

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  • MIDI keyboard
  • Digital or acoustic piano
  • Guitar
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Bbaug Bb D F#

Bbaug in keys and progressions

  • Bbaug is the III+ chord in the harmonic minor scale of G minor.
  • Its thirds are equal, so Bbaug, Daug and F#aug use the same three keys: the root is whichever note you treat as home.
  • A common move is Bb → Bbaug → Eb: the raised fifth F# pushes up to G.

Eb · Bb

How to play Bbaug on the piano

Any order of Bb, D, F# is still Bbaug.

Bbaug Bb D F#

Root position: Bb D F#

Bbaug D F# Bb

1st inversion: D F# Bb

Bbaug F# Bb D

2nd inversion: F# Bb D

  • Root position: starts on Bb, a black key; black keys: Bb, F#
  • 1st inversion: starts on D, a white key; black keys: F#, Bb
  • 2nd inversion: starts on F#, a black key; black keys: F#, Bb

What makes Bbaug different

Same root, same third or fifth moved by a semitone.

ChordNotesThirdFifth
Bb Bb D Fmajor 3rdperfect 5th
Bbm Bb Db Fminor 3rdperfect 5th
Bbdim Bb Db Fbminor 3rddiminished 5th
Bbaug Bb D F#major 3rdaugmented 5th
ChordRunner showing a chord block while hands play the piano

Train Bbaug in a game

In ChordRunner Bbaug rides towards your runner between other chords: play it in time. MIDI keyboard or microphone, both work.

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All piano chords · Augmented chords explained

Common questions

What notes are in the B flat augmented chord?

Bbaug has three notes: Bb, D, F#. Root, major 3rd and augmented 5th (formula 1 3 #5).

What is the difference between Bbaug and Bb?

One note. Bb has F on top; Bbaug moves it to F#. The new fifth is what gives Bbaug its floating, unresolved sound.

Where does Bbaug go?

Bbaug is the III+ chord in the harmonic minor scale of G minor. Its thirds are equal, so Bbaug, Daug and F#aug use the same three keys: the root is whichever note you treat as home.

Can I practise Bbaug with a MIDI keyboard or microphone?

Yes. ChordRunner detects a USB MIDI keyboard automatically and also hears an acoustic piano through the microphone. Bbaug counts in any position, as long as Bb, D, F# sound together.

Your instrument is the controller.

ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.

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