C#dim7 (Dbdim7) Guitar Chord
C#dim7 (C# diminished seventh) is a four-note chord made from C#, E, G and Bb. A diminished seventh is minor thirds stacked all the way up, so it is symmetrical: the same shape moved up three frets plays the same notes. It makes a tense passing chord that leads up a half step.
C#dim7 C# diminished seventh
11th fret1 / 4
Notes
- C#1
- Eb3
- Gb5
- Bbbb7
Built from the root C#, the minor third E, the flat fifth G and the diminished seventh Bb.
Also written Dbdim7: Db Fb Abb Cbb
How to play C#dim7
Frets from low E to high E; x means don't play that string.
Easiest shape to start with: 3rd fret (x4535x). It has nothing above fret 5 and 2 muted strings.
Keys with C#dim7
Every note of C#dim7 is in these keys. The numeral is its place in the key.
Minor keys
- vii°7 in D harmonic minor