Extended
C# 13th chord
The largest common dominant extension, stacking the thirteenth on top for a full, brassy jazz sound.
Notes in C# 13th
| Note | Interval | Semitones from root |
|---|---|---|
| C# | Root | 0 |
| F | Major 3rd | 4 |
| G# | Perfect 5th | 7 |
| B | Minor 7th | 10 |
| D# | Major 9th | 14 |
| A# | Major 13th | 21 |
Formula: 0–4–7–10–14–21 semitones above the root. Move the whole shape up or down and you get the same chord in another key — that is why 13th chords sound alike no matter where they start.
Other chords on C#
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