1,008 guitar chords with several shapes each, finger numbers, difficulty and real sound, in any tuning.
Bdim7 is a diminished seventh chord made of 4 notes: B, D, F, A♭. It sounds spooky and suspenseful, and you hear it in passing chords, old film scores and dramatic moments; any note of it can be the root.
The library above opens on Bdim7 with 13 shapes up and down the neck. Tap a shape to hear it, or play it one string at a time.
| Note | Degree | Interval from B | Semitones |
|---|---|---|---|
| B | 1 | root | 0 |
| D | ♭3 | minor third | 3 |
| F | ♭5 | diminished fifth | 6 |
| A♭ | 𝄫7 | diminished seventh | 9 |
Formula: 1 – ♭3 – ♭5 – 𝄫7.
x20101x2313x7867xxxx9(10)9(10)x(14)(15)(13)(15)xx(14)0(13)0(13)The open position shape is the one to learn first. Once it is easy, try the shape at the 6th fret (7867xx): the same chord, higher and brighter, handy when the chords before and after it sit up the neck.
Bdim7 is not built from one major or minor scale, so it works as a colour or passing chord. Passing chords, old film scores and dramatic moments; any note of it can be the root.
B, D, F, A♭: the root, minor third, flat fifth, diminished seventh.
Open position: x20101 (low string first), rated Beginner.
Bdim7 has A♭. Bdim7 sounds spooky and suspenseful; Bdim sounds tense and unstable.
No. The easiest shape is rated Beginner and needs 3 fingers.