Ab13b9 chord

Ab13b9 chord for piano presented by keyboard diagrams.
Explanation: The Ab13b9 alter the Ab13 by the change of one note. The A flat thirteenth flat ninth is a seven-note chord, but due to practical circumstances, one or more notes (the fifth primarily) are omitted. The chord name can also be written as Ab13(b9) or Ab13-9.
Theory: Compared to Ab13 the ninth tone in the chord is flattenedThe tone is one half step lower.

Ab13b9

Ab13b9 chord diagram
Notes: Ab - C - Eb - Gb - A - Db - F

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Ab13#11 polychord

Explanation: The image below shows a polychord version of the Ab13#11. The chord is played in two parts with both hands.

Ab13#11 chord diagram
Polychord Ab7 (LH), Bb (RH)

Ab chord categories

Ab Abm Ab7 Abm7 Abmaj7 AbmM7 Ab6 Abm6 Ab6/9 Ab5 Ab9 Abm9 Abmaj9 Ab11 Abm11 Abmaj11 Ab13 Abm13 Abmaj13 Abadd Ab7-5 Ab7+5 Absus Abdim Abdim7 Abm7b5 Abaug Abaug7