C#dim7 chord

C#dim7 chord for piano with keyboard diagram.
Explanation: The C#dim7 is a four-note chord. C#dim7 can also be written as C#°7.
Theory: The C#dim7 is a diminished chord extended with a minor third.

C#dim7

C#dim7 chord diagram
Notes: C# - E - G - A#
Left hand: 5-3-2-1
Right hand: 1-2-3-5

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C# chord categories

C# C#m C#7 C#m7 C#maj7 C#mM7 C#6 C#m6 C#6/9 C#5 C#9 C#m9 C#maj9 C#11 C#m11 C#13 C#m13 C#add C#7-5 C#7+5 C#sus C#dim C#dim7 C#m7b5 C#aug C#aug7