C7-5 (C7b5) altered chord
Altered C chord for piano presented by keyboard diagrams.
Explanation: The C7-5 (or C7b5) 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 flattenedThe tone is one half step lower.
Fingerings: Little finger, middle finger, index finger, index finger (left hand); thumb, index finger, middle finger, little finger (right hand).
Notes: C - E - Gb - Bb