C#m7b5 is a half-diminished, spelled C#, E, G and B. In DADGAD tuning (D2 A2 D3 G3 A3 D4) the easiest shape is x42022, which sits at fret 2, spans 2 frets, lets 1 string ring open and mutes 1 string. 12 positions for it are shown below, from the nut up to fret 11.
Notes and intervals
Note
C#
E
G
B
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.
x42022sits at fret 2, spans 2 frets, lets 1 string ring open and mutes 1 string111099109sits at fret 9 and needs a barre across 4 strings at fret 9x45475sits at fret 4, needs a barre across 3 strings at fret 4 and mutes 1 string11141101414sits at fret 11, needs a barre across 3 strings at fret 11 and lets 1 string ring openxxx679sits at fret 6, spans 3 frets and mutes 3 strings1179010xsits at fret 7, spans 4 frets, lets 1 string ring open and mutes 1 string111014014xsits at fret 10, spans 4 frets, lets 1 string ring open and mutes 1 stringxx5679sits at fret 5, spans 4 frets and mutes 2 stringsx4202xsits at fret 2, spans 2 frets, lets 1 string ring open and mutes 2 stringsx42422sits at fret 2, needs a barre across 4 strings at fret 2 and mutes 1 stringx42442sits at fret 2, needs a barre across 4 strings at fret 2 and mutes 1 stringx4244xsits at fret 2, spans 2 frets and mutes 2 strings
Keys C#m7b5 belongs to
C#m7b5 is diatonic to 8 of the 96 keys this app knows, playing a different role in each.