Bbsus4 chord

The Bbsus4 chord (Bb suspended fourth, also written A#sus4) on a piano: the notes, every inversion and the keys it belongs to. Tap play to hear it, and download it as MIDI.

Free
No account
Runs in your browser
14 chord types in every key
MIDI download

Bb1Eb4F5

About the suspended fourth chord

The third is replaced by the fourth. It sounds like it wants to fall back to the major or minor chord.

Formula: 1 4 5. Used in: Pop, rock, trance and EDM build-ups.

Bbsus4 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.

More Bb chords

Other suspended fourth chords

Play Bbsus4 with VISIONS OF TOMORROW →71 Serum 2 presets for house and techno: pads, keys, plucks and stabs made for chords. $29.

Or start with the free pack: 24 sounds from all three packs, and a 25% code for the full packs a few days later.

Questions

What notes are in a Bbsus4 chord?

Bb, Eb, F.

What is the formula of a suspended fourth chord?

1 4 5. The third is replaced by the fourth. It sounds like it wants to fall back to the major or minor chord.

Is Bbsus4 the same as A#sus4?

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.