Ab7-5 altered chord
Altered Ab chord for piano presented by keyboard diagrams.
Explanation: The Ab7-5 alter the Ab7 by the change of one note. Ab7-5 stands for A flat seven minus five.
Theory: The Ab7-5 are identical with the Ab7 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, thumb (left hand); thumb, index finger, middle finger, little finger (right hand).
Notes: Ab - C - D - Gb