Bb major chord

The Bb major chord (Bb, also written A#) 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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Bb1D3F5

About the major chord

The root, a major third and a perfect fifth. The basic bright chord.

Formula: 1 3 5. Used in: Everywhere: pop, house, rock, gospel.

Bb 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 Bb

Bb is the V chord in Eb major, IV chord in F major, I chord in Bb major, VII chord in C minor, VI chord in D minor and III chord in G minor.

It also appears in C Dorian (VII), F Dorian (IV), G Dorian (III), D Phrygian (VI), G Phrygian (III), A Phrygian (II), Eb Lydian (V), Ab Lydian (II), Bb Lydian (I), C Mixolydian (VII), F Mixolydian (IV), Bb Mixolydian (I).

Build a progression around it in the chord progression generator.

More Bb chords

Other major chords

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Questions

What notes are in a Bb major chord?

Bb, D, F.

What is the formula of a major chord?

1 3 5. The root, a major third and a perfect fifth. The basic bright chord.

What key is Bb in?

Bb is a chord in Eb major (V), F major (IV), Bb major (I), C minor (VII).

Is Bb the same as A#?

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.