Bb7 chord

The Bb7 chord (Bb dominant seventh, also written A#7) on a piano: the notes, every inversion and the keys it belongs to. Tap play to hear it, and download it as MIDI.

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Bb1D3F5Abb7

About the dominant seventh chord

A major chord with a minor seventh on top. It has tension that wants to resolve, usually to the chord a fifth below.

Formula: 1 3 5 b7. Used in: Blues, funk, disco, jazz and soulful house.

Bb7 inversions

Tap an inversion to hear it. Inversions keep the same notes in a different order, which lets chords move smoothly from one to the next.

Keys with Bb7

Bb7 is the V chord in Eb major and VII chord in C minor.

It also appears in F Dorian (IV), G Phrygian (III), Ab Lydian (II), Bb Mixolydian (I).

Build a progression around it in the chord progression generator.

More Bb chords

Other dominant seventh chords

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Questions

What notes are in a Bb7 chord?

Bb, D, F, Ab.

What is the formula of a dominant seventh chord?

1 3 5 b7. A major chord with a minor seventh on top. It has tension that wants to resolve, usually to the chord a fifth below.

What key is Bb7 in?

Bb7 is a chord in Eb major (V), C minor (VII).

Is Bb7 the same as A#7?

Yes. Bb and A# are the same key on the piano, so the chords sound the same. Which name is used depends on the key of the song.