Extended · C# root / D♭
C#maj9 / D♭maj9
Lush and expansive. Adds colour above the major 7th chord.
Notes in C#maj9
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#maj9, C#m, C#7, or another quality — the hardest and most useful ear training skill.
Major 9th in All 12 Keys
Other Chords in C#
Related Extended
About the C#maj9 Chord
The C#maj9 chord is a major 9th chord built on C# (also written D♭maj9). It contains the notes Db, F, Ab, C, Eb — the root, third, fifth, seventh, and extensions.
Lush and expansive. Adds colour above the major 7th chord. Practising the C#maj9 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.