B♭13
Bb Dominant 13th — the tallest dominant — the thirteenth on top gives the resolution a wide, singing edge.
The keys
B♭ – D – F – A♭ – C – G
What's inside B♭13
| Note | Interval from root | Degree |
|---|---|---|
| B♭ | Root | 1 |
| D | Major 3rd | 3 |
| F | Perfect 5th | 5 |
| A♭ | Minor 7th | b7 |
| C | Major 9th | 9 |
| G | Major 13th | 13 |
A working voicing
Split the chord between two hands the way working players do — a solid shell low down, the colour tones up top:
| Hand | Keys |
|---|---|
| Left (shell) | B♭2 – A♭3 |
| Right (colour) | D5 – C6 – G6 |
Where B♭13 lives
As the I chord
B♭13 → E♭ → F → B♭13
The classic I–IV–V–I motion with this chord as home.
In a ii–V–I
Cm7 → F7 → B♭13
The strongest cadence in harmony, resolving onto this chord.
Put B♭13 under your fingers
Hear every voicing, see the keys light up, and drill it in the interactive Chord & Voicing Lab.
Open the Chord & Voicing Lab →