C#7 chord
C# dominant seventh
<
1 / 5
>
G
F#
G
G#5
A
A#
B
C
C#
D
D#
E
F
F#
G
G#
C
C
C#1
D
D#
E
F
F#
G
G#
A
A#
B
C
C#
E
D#
E
F3
F#
G
G#
A
A#
B
C
C#
D
D#
E
F
A
G#
A
A#
Bb7
C
C#
D
D#
E
F
F#
G
G#
A
B
3
5
7
10
The C#7 chord has the formula 1, 3, 5, b7 with notes C#, F, G#, B
The dominant seventh chord is a mildly dissonant variation of the major chord that is used in many genres, like blues, funk, and rock. In blues, entire progressions can be composed of dominant seventh chords.