7th Chords
B Dominant 7th chord
A major triad plus a minor seventh. The tritone inside it creates the pull that resolves to the tonic — the engine of blues and jazz cadences.
Notes in B Dominant 7th
| Note | Interval | Semitones from root |
|---|---|---|
| B | Root | 0 |
| D# | Major 3rd | 4 |
| F# | Perfect 5th | 7 |
| A | Minor 7th | 10 |
Formula: 0–4–7–10 semitones above the root. Move the whole shape up or down and you get the same chord in another key — that is why Dominant 7th chords sound alike no matter where they start.
Other chords on B
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