C#7 Guitar Chord
C#7 is a four-note dominant seventh chord built from C#, F, G#, B. Adding a minor seventh to the major triad creates tension that most naturally resolves to F# major, making it the classic V7 chord in the key of F#.
4 ways to play C#7
Notes
Intervals
C# (Root), F (Major 3rd), G# (Perfect 5th), B (Minor 7th)
Notes in the C# Dominant 7th Chord
The C# Dominant 7th chord is built from 4 notes: C#, F, G#, B. It is a dominant 7th chord — built from a root, major third, perfect fifth, and minor seventh (10 semitones above the root). On guitar, these notes are voiced across multiple strings simultaneously to create the full chord sound. Depending on the voicing, some notes may be doubled in different octaves to fill out the sound.
Common Chord Progressions with C#7
C# Dominant 7th appears in many common progressions. Here are the most-used patterns when C#7 is the tonic chord:
Use our chords in a key tool to find all the chords that naturally pair with C#7 in any key.
Frequently Asked Questions
What notes are in the C# Dominant 7th chord?
The C# Dominant 7th chord is made up of C#, F, G#, B. These 4 notes form a four-note chord structure.
What key is the C# Dominant 7th chord in?
C# Dominant 7th is a less common chord that doesn't appear as a diatonic chord in the standard 12 major keys, but is used as a borrowed or chromatic chord in many styles.
How do I play the C#7 chord on guitar?
Place your fingers on the guitar fretboard according to the diagram above. The numbered dots show finger placement (1 = index, 2 = middle, 3 = ring, 4 = pinky), "O" means play the string open, and "X" means mute that string.
Other C# Chords
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