B Flat Suspended 4th (also written A#sus4)
Bbsus4 is made of 3 notes: Bb, Eb and F. Here it is in root position, with Bb at the bottom.
Inside Notley Piano: all the inversions of Bbsus4, fingering for both hands, a play button, and practice that helps you remember it.
| Note | Degree | Interval from Bb |
|---|---|---|
| Bb | 1 | root |
| Eb | 4 | perfect 4th |
| F | 5 | perfect 5th |
A sus4 chord replaces the 3rd with a perfect 4th. It sounds tense and unresolved, and it usually resolves back down to the major chord.