Finger Positions

C#7b5/D diagram
Root Note C#
Name C# over D
Intervals 1P-3M-5d-7m
Relative Minor A#m
Notes D, C#, F, G, B
Aliases C#7b5

How to play the C#7b5/D Chord

The C#7b5/D is a fundamental dominant chord in guitar music. To play this chord correctly, ensure your fingers are placed precisely on the frets indicated in the diagram above.

Music Theory Analysis

From a theoretical perspective, the C# over D is built using the 1P, 3M, 5d, 7m intervals. In the key of C# Major, this chord functions as the I chord.

Common Progressions

In music composition, the C#7b5/D chord is often used to create tension or resolution.

I-V-vi-IV

C# → G# → A#m → F#

vi-IV-I-V

A#m → F# → C# → G#

The Diatonic Family

Understanding the "family" of chords that belong to C# helps with transposition and ear training.

Triads

C# D#m Fm F# G# A#m Cdim

7ths

C#maj7 D#m7 Fm7 F#maj7 G#7 A#m7 Cm7b5

Scale Compatibility

View All Scales
Neopolitan Major Pentatonic Whole Tone Pentatonic Lydian Dominant Pentatonic Super Locrian Pentatonic Prometheus Neopolitan Prometheus Mystery #1 Whole Tone Locrian Major Altered Lydian Dominant Leading Whole Tone Lydian Minor Hungarian Major Oriental

* 15 scales found containing the notes D, C#, F, G, B.

Acoustic & Digital Analysis

Digital footprint of the C#7b5/D chord for MIDI programming and synthesizer sound design.

MIDI Numbers 62, 61, 65, 67, 71
Frequencies (Hz)

293.6647679174076, 277.1826309768721, 349.2282314330039, 391.99543598174927, 493.8833012561241