C#dim7 chord
C# diminished seventh
<
1 / 1
>
3
5
7
10
The C#dim7 chord has the formula 1, b3, b5, bb7 with notes C#, E, G, A#
The diminished seventh chord is used in classical and jazz music. It is often formed on the seventh degree and used as a leading-tone chord toward the tonic.