Leading-tone diminished seventh to minor
The diminished-seventh root lies a semitone below the destination tonic. Its tones come from that tonic’s harmonic minor scale.
Guitar chord companion
B Diminished 7 Chord
Learn the B Diminished 7 chord on guitar with chord tones, intervals, and interactive fretboard shapes.
1Bb3Db5Fbb7Ab
Playable B Diminished 7 Chord voicings
Start with these chord-box shapes, then use the full fretboard below to see every chord tone.
A shape, fret 2
Low to high strings: x 2 3 x 3 4
G shape, fret 4
Low to high strings: 7 5 x x 6 4
E shape, fret 7
Low to high strings: 7 8 9 7 9 7
D shape, fret 9
Low to high strings: x x 9 10 9 10
C shape, fret 12
Low to high strings: x 14 12 13 12 13
Full fretboard map
Every B Diminished 7 Chord chord tone across the neck, with roots highlighted for quick orientation.
Frets 0–24. Select a position or tap a note to hear it.
CAGED
Progression examples using B Diminished 7
Try these progressions to hear the harmony in context. On bass, outline each chord with individual target tones.
Borrowed diminished seventh to major
Borrow the leading-tone diminished seventh from the destination tonic’s parallel harmonic minor, then resolve into the major chord.
Chord Tones
| Degree | Interval | Note |
|---|---|---|
| 1 | Root | B |
| b3 | m3 | D |
| b5 | d5 | F |
| bb7 | d7 | Ab |
Scales Containing the Complete Formula
Complete Formula
1 – b3 – b5 – bb7
Compound degrees retain their names: 9, 11, and 13 are extensions. A voicing may place their pitches in a closer register.