C Sharp Diminished 7th (also written Dbdim7)
C#dim7 is made of 4 notes: C#, E, G and Bb. Here it is in root position, with C# at the bottom.
Inside Notley Piano: all the inversions of C#dim7, fingering for both hands, a play button, and practice that helps you remember it.
| Note | Degree | Interval from C# |
|---|---|---|
| C# | 1 | root |
| E | b3 | minor 3rd |
| G | b5 | diminished 5th |
| Bb | bb7 | diminished 7th |
A diminished 7th chord stacks three minor 3rds. It sounds dramatic and spooky, and every note is the same distance apart, so the same shape repeats every three frets.