What is a F#dim7 Chord?

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F#dim7

F#dim7 Diminished 7th

String-by-String

E
×
A
×
D
1
G
2
B
1
e
2

F#dim7 Diminished 7th is a diminished seventh chord with the root F#, minor third A, diminished fifth C, and diminished seventh D#. Its symmetric structure makes it a powerful chromatic connector.

Intervals

RootMinor 3rdDiminished 5thMajor 6th

Notes

F#ACD#

Why does F#dim7 sound dramatic and chromatic?

The F#dim7 Diminished 7th chord gets its dramatic and chromatic character from the combination of its root, minor 3rd, diminished 5th, major 6th. The specific intervals between the notes F#, A, C, D#create the harmonic tension and color that define this chord's unique sonic signature.

How to use F#dim7?

F#dim7 is commonly used in progressions across many genres. Try substituting it where you would normally play a standard F# chord for added harmonic interest. It pairs well with other chords in the key of F# and can serve as both a foundation and a color chord depending on the context.