C#°
Triads · C# root / D♭
C#° / D♭°
A tense, unstable triad built from two stacked minor thirds.
0 st3 st6 st
Notes in C#°
DbRoot
E3rd
G5th
C# / Db sits between C and D. A common key in jazz and pop — think Db major in many jazz standards.
Identify the Chord Quality on C#
Each chord below is played on C#. Listen and identify whether you heard C#°, C#m, C#7, or another quality — the hardest and most useful ear training skill.
Diminished in All 12 Keys
Other Chords in C#
Related Triads
About the C#° Chord
The C#° chord is a diminished chord built on C# (also written D♭°). It contains the notes Db, E, G — the root, third, and fifth.
A tense, unstable triad built from two stacked minor thirds. Practising the C#° chord across different voicings and contexts builds the harmonic recognition that lets you identify it instantly in any musical setting — whether in a band mix, a recording, or a live performance.