Ab7-5 (Ab7b5) altered chord
Altered Ab chord for piano presented by keyboard diagrams.
Explanation: The Ab7-5 (or Ab7b5) 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 flattenedThe tone is one half step lowerThe tone is one half step lower.
Fingerings: Little finger, middle finger, index finger, thumb (left hand); thumb, index finger, middle finger, little finger (right hand).
Notes: Ab - C - D - Gb