C# Minor 9th

Notes:C# – E – G# – B – D#
Formula:R-m3-P5-m7-M9
Intervals:P1-m3-P5-m7-M9
Scale Degrees:1-b3-5-b7-9

Introduction

The C# Minor 9th piano chord (C#m9) consists of the notes C#, E, G#, B, D#. It is a minor 7th chord with an added major 9th, giving it a dark yet lush character widely used in jazz, soul, and R&B progressions. Formula: R-m3-P5-m7-M9 | Scale degrees: 1-b3-5-b7-9.

Enharmonic equivalent: C♯ is enharmonically equivalent to D♭. See Db Minor 9th.

Notes

Notes:C# – E – G# – B – D#

C# Minor 9th Inversions

PositionNotes
Root PositionC#4 – E4 – G#4 – B4 – D#5
1st InversionE4 – G#4 – B4 – C#5 – D#5
2nd InversionG#4 – B4 – C#5 – D#5 – E5

Key Signature

The key of C# Minor 9th has 4 sharps: F♯, C♯, G♯, D♯.

F♯C♯G♯D♯

Theory: Intervals

Formula: R-m3-P5-m7-M9
Intervals: P1-m3-P5-m7-M9

The C# Minor 9th is built by stacking intervals from the root note. The formula R-m3-P5-m7-M9 describes the scale degrees used. The intervals P1-m3-P5-m7-M9 show the distance between each note in the chord.

C# Minor 9th — Frequently Asked Questions

What notes are in the C# Minor 9th chord?

C# Minor 9th is built from the C# root. Check the interactive keyboard above for exact notes and fingering.

How is the C# Minor 9th chord used in music?

C# Minor 9th appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Minor 9th).

What is the fingering for C# Minor 9th?

See the fingering chart above. Right hand typically uses thumb on root. Left hand uses pinky on root.

What are the inversions of C# Minor 9th?

Use the inversion buttons above to see each inversion with notes, fingering, and staff notation.

Practice Tips

  • Rich, extended jazz voicing.
  • The 9th adds colour and depth.
  • Practice dropping less essential notes.
  • Compare with the simpler 7th version.
  • Jazz, R&B, neo-soul applications.
  • Spread voicings sound best.