Cdim7 Ukulele Chord
A dark, symmetrical diminished seventh built from C, D#, F# and A. Its restless, unresolved sound makes it a favorite passing and leading-tone chord in jazz, ragtime and minor-key classical writing.
Also known as
- C°7
- C °7
- C dim7
- C diminished 7th
- C diminished seventh
How to Play This Chord
Position your fingers on the fretboard as shown in the diagram. The vertical lines represent the four strings, from the top G string (left) to the A string (right), and the horizontal lines are the frets. Numbers inside the dots indicate which finger to use: 1 (index), 2 (middle), 3 (ring), 4 (pinky). An X means don't play that string; an O means play it open. A bar spanning multiple strings means one finger presses across all of them at once — this is known as a barre chord.
Tips & Tricks
Lay your index on the G string at fret 2, then stack middle on the E string and ring on the C string at fret 3, with pinky on the A string at fret 3. The shape feels cramped at first, so arch your knuckles to keep each string clear; slide the whole grip up three frets and you have D#, F# or A diminished seventh.