BØ9 Chord
Chord Tones
| Interval | Note |
|---|---|
| Perfect 1st | B |
| Minor 3rd | D |
| Diminished 5th | F |
| Major 9th | C# |
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Tetrad (four-note chord) rooted on B（Chord Tones: B, D, F, C#）
| Interval | Note |
|---|---|
| Perfect 1st | B |
| Minor 3rd | D |
| Diminished 5th | F |
| Major 9th | C# |
