Sevenths · C# root / D♭
C#7 / D♭7
Tense and driving. Creates the strongest pull toward the tonic.
Notes in C#7
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#7, C#m, C#7, or another quality — the hardest and most useful ear training skill.
Dominant 7th in All 12 Keys
Other Chords in C#
Related Sevenths
About the C#7 Chord
The C#7 chord is a dominant 7th chord built on C# (also written D♭7). It contains the notes Db, F, Ab, B — the root, third, fifth, and seventh.
Tense and driving. Creates the strongest pull toward the tonic. Practising the C#7 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.