Triads

B♭ augmented chord

Dreamy and suspenseful; the raised 5th keeps pushing forward.

Spell as A♯aug
Notes
B♭DF♯
Formula
13♯5
Built from
root · major 3rd · augmented 5th

How to play B♭aug

About the B♭ augmented chord

Playing it

On guitar, B♭aug has an open-position shape, x10332, using four fingers alongside the open strings. Don’t strum the low E string.

On piano, B♭aug has two black keys (B♭ and F♯) and one white key.

On ukulele the usual B♭aug shape is 3221, using four fingers.

Related chords

B♭aug is symmetrical — its notes are evenly spaced — so Daug and F♯aug contain exactly the same notes. There are only four different-sounding augmented chords in all.

Move a single note and B♭aug becomes a different chord: lower F♯ to F for B♭.

B♭aug chord (B♭ augmented) on guitar, ukulele and piano
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