A#m7b5 is a half-diminished, spelled A#, C#, E and G#. In Standard tuning (E2 A2 D3 G3 B3 E4) the easiest shape is x12120, which sits at fret 1, needs a barre across 3 strings at fret 1, lets 1 string ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 13.
Notes and intervals
Note
A#
C#
E
G#
Interval
1P
3m
5d
7m
12 ways to play it
Ordered by how hard they are to fret, easiest first, one per position on the neck. Fret numbers are relative to the position marked beside each grid.
x12120sits at fret 1, needs a barre across 3 strings at fret 1, lets 1 string ring open and mutes 1 string6766xxsits at fret 6, needs a barre across 4 strings at fret 6 and mutes 2 strings042324sits at fret 2, needs a barre across 3 strings at fret 2 and lets 1 string ring openxx8999sits at fret 8, spans 1 fret and mutes 2 strings6466xxsits at fret 4, spans 2 frets and mutes 2 stringsxx6656sits at fret 5, spans 1 fret and mutes 2 strings046350sits at fret 3, spans 3 frets and lets 2 strings ring openx131413140sits at fret 13, needs a barre across 3 strings at fret 13, lets 1 string ring open and mutes 1 stringx131113110sits at fret 11, needs a barre across 3 strings at fret 11, lets 1 string ring open and mutes 1 string011119110sits at fret 9, spans 2 frets and lets 2 strings ring openx1212xsits at fret 1, needs a barre across 3 strings at fret 1 and mutes 2 strings012120sits at fret 1, needs a barre across 3 strings at fret 1 and lets 2 strings ring open
Keys A#m7b5 belongs to
A#m7b5 is diatonic to 8 of the 96 keys this app knows, playing a different role in each.