C# 7 Sharp 9 Flat 13 Guitar Chord
Voicing Positions (6)
Interval Colors
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C# 7 Sharp 9 Flat 13 Chord
The C# 7 Sharp 9 Flat 13 chord is built from the intervals: Root, Minor 3rd, Major 3rd, Perfect 5th, Minor 6th, and Minor 7th. It contains the notes C#, E, F, G#, A, and B. Altered dominants create tension that resolves beautifully in jazz and blues progressions.
What C# 7 Sharp 9 Flat 13 Is
The C# 7 Sharp 9 Flat 13 is a dominant chord — a major triad with a flat seventh added on top. That added minor seventh creates a tritone with the major third (the famous "devil in music" interval), which is what makes dominant chords sound restless and what makes them the gravitational engine of tonal music. Every dominant chord wants to resolve, usually down a perfect fifth to the chord that shares its target as a root.
How C# 7 Sharp 9 Flat 13 Sounds
A C# 7 Sharp 9 Flat 13 rarely sounds final on its own. It carries a built-in sense of leaning forward, of needing to resolve. In blues this restless quality is often left unresolved on every chord of a 12-bar form, which is part of why blues sounds the way it does. In jazz and pop, dominant sevenths typically resolve down a fifth — V7 to I — completing a phrase.
How To Use C# 7 Sharp 9 Flat 13 In A Progression
Dominant seventh chords are the engine of cadences. The most common use is V7 → I in a major key (so C# 7 Sharp 9 Flat 13 would resolve to the chord a perfect fifth below the root). They also drive secondary dominants — chords that briefly tonicize a non-tonic chord — and are the backbone of every 12-bar blues progression.
Playing C# 7 Sharp 9 Flat 13 On Guitar
On guitar, the most common voicings of C# 7 Sharp 9 Flat 13 use the open position when possible (which is why guitarists tend to favour keys like E, A, D, G, and C) and movable barre or half-barre shapes everywhere else. The voicing diagrams above show several practical positions across the neck — the open or low-fret voicings will sound brightest, while the higher voicings will have a thinner, more focused tone. Always experiment with which fingering serves the line you are playing.
Related Chords
Same quality (7 Sharp 9 Flat 13)
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