B Flat Dominant 7th Suspended 4th (also written A#7sus4)
Bb7sus4 is made of 4 notes: Bb, Eb, F and Ab. Here it is in root position, with Bb at the bottom.
Inside Notley Piano: all the inversions of Bb7sus4, 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 |
| Ab | b7 | minor 7th |
A 7sus4 chord is a dominant 7th with the 3rd replaced by a 4th. It sounds open and floating, and it often leads into the plain 7th chord.