A#m7(b5) chord

A#m7b5 chord for piano with keyboard diagram.
Explanation: The A sharp minor seventh flat five is also called A sharp half-diminished (also written as A#ΓΈ). The chord is abbreviated A#m7b5 or A#m7(b5).
Theory: The A#m7b5 is an A sharp minor seventh with a lowered fifth.

A#m7b5

A#m7b5 chord diagram
Notes: A# - C# - E - G#
Left hand: 5-3-2-1
Right hand: 1-2-3-5

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A# chord categories

A# A#m A#7 A#m7 A#maj7 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#m7b5 A#aug