C7-5 altered chord

Altered C chord for piano presented by keyboard diagrams.
Explanation: The C7-5 alter the C7 by the change of one note. C7-5 stands for C seven minus five.
Theory: The C7-5 are identical with the C7 except that the fifth tone of the scale (i.e. the third tone in the chord) is flattened.
Fingerings: little finger, middle finger, index finger, index finger (left hand); thumb, index finger, middle finger, little finger (right hand).

C7-5

C7-5 chord diagram
Notes: C - E - Gb - Bb

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C chord categories

C Cm C7 Cm7 Cmaj7 C6 Cm6 C6/9 C5 C9 Cm9 Cmaj9 C11 C13 Cadd C7-5 C7+5 Csus Cdim Caug