Ab7+9 (Ab7#9) altered chord
Altered Ab chord for piano presented by keyboard diagrams.
Explanation: The Ab7+9 alter the Ab9 by the change of one note. The chord name can also be written as Ab7#9 or Ab7(#9).
Theory: The Ab7+9 are identical with the Ab9 except that the major ninth is sharpenedThe tone is one half step higher.
Notes: Ab - C - Eb - Gb - B