B13
B 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 B13
| 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) | B2 – A3 |
| Right (colour) | E♭5 – D♭6 – A♭6 |
Where B13 lives
As the I chord
B13 → E → G♭ → B13
The classic I–IV–V–I motion with this chord as home.
In a ii–V–I
D♭m7 → G♭7 → B13
The strongest cadence in harmony, resolving onto this chord.
Put B13 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 →