A#7-9 (A#7b9) altered chord

Altered A# chord for piano presented by keyboard diagrams.
Explanation: The A#7-9 alter the A#9 by the change of one note. The chord name can also be written as A#7b9 or A#7(b9).
Theory: The A#7-9 are identical with the A#9 except that the major ninth is flattenedThe tone is one half step lower.

A#7-9

A#7+9 chord diagram
Notes: A# - D - F - G# - B / A# - C## - E# - G# - B

A7-9 chord ‹ Previous • Next › B7-9 chord

See also A#7+9 chord ›

A# chord categories

A# A#m A#7 A#m7 A#maj7 A#mM7 A#6 A#m6 A#6/9 A#5 A#9 A#m9 A#maj9 A#11 A#m11 A#13 A#m13 A#add A#7-5 A#7+5 A#sus A#dim A#dim7 A#m7b5 A#aug A#aug7