C# Dominant 7th Sharp 11

Notes:C# – F – G – G# – B
Formula:R-M3-A4-P5-m7
Intervals:P1-M3-A4-P5-m7
Scale Degrees:1-3-#4-5-b7

Introduction

The C# Dominant 7th Sharp 11 piano chord (C#7\u266f11) consists of the notes C#, F, G, G#, B. It is a dominant 7th chord with an augmented (sharpened) 11th, creating a distinctive tritone clash, giving it a tense, tritone-driven character central to the Lydian Dominant sound in jazz and fusion. Formula: R-M3-A4-P5-m7 | Scale degrees: 1-3-#4-5-b7.

Enharmonic equivalent: C♯ is enharmonically equivalent to D♭. See Db Dominant 7th Sharp 11.

Notes

Notes:C# – F – G – G# – B

C# Dominant 7th Sharp 11 Inversions

PositionNotes
Root PositionC#4 – F4 – G4 – G#4 – B4
1st InversionF4 – G4 – G#4 – B4 – C#5
2nd InversionG4 – G#4 – B4 – C#5 – F5

Key Signature

The key of C# Dominant 7th Sharp 11 has 7 sharps: F♯, C♯, G♯, D♯, A♯, E♯, B♯.

F♯C♯G♯D♯A♯E♯B♯

Theory: Intervals

Formula: R-M3-A4-P5-m7
Intervals: P1-M3-A4-P5-m7

The C# Dominant 7th Sharp 11 is built by stacking intervals from the root note. The formula R-M3-A4-P5-m7 describes the scale degrees used. The intervals P1-M3-A4-P5-m7 show the distance between each note in the chord.

C# Dominant 7th Sharp 11 — Frequently Asked Questions

What notes are in the C# Dominant 7th Sharp 11 chord?

C# Dominant 7th Sharp 11 is built from the C# root. Check the interactive keyboard above for exact notes and fingering.

How is the C# Dominant 7th Sharp 11 chord used in music?

C# Dominant 7th Sharp 11 appears in jazz, pop, and classical contexts. Its sound depends on the chord quality (Dominant 7th Sharp 11).

What is the fingering for C# Dominant 7th Sharp 11?

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

What are the inversions of C# Dominant 7th Sharp 11?

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

What scale matches C# Dominant 7th Sharp 11?

The Lydian Dominant scale is the natural match — Mixolydian with a raised 4th.

Practice Tips

  • C# Dominant 7th Sharp 11 is the Lydian Dominant sound.
  • The #11 does not clash with the major third.
  • Use as a sophisticated substitute for C#7.
  • Practice the Lydian Dominant scale over this chord.
  • Jazz tritone substitution applications.
  • Voicing tip: spread the notes for best sound.