What notes are in the C#m7b5 chord?

C#m7b5 contains C#, E, G, B. Its formula is 1-b3-b5-b7.

What is the easiest way to play C#m7b5?

Try x x 11 12 12 12 (Easy 4-string version). It uses 4 fretted notes and no barre.

What key is C#m7b5 in?

C#m7b5 belongs to D major (as the viiø7 chord).

Is C#m7b5 the same as Dbm7b5?

Yes. C# and Db are the same pitch on the guitar, so C#m7b5 and Dbm7b5 use the same shapes. The name depends on the key: flat keys use flats and sharp keys use sharps.

Why does my C#m7b5 chord buzz?

Press each string just behind the fret wire, keep your fingertips upright so they don't touch the next string, and keep your thumb behind the neck. On a barre, roll the index finger slightly onto its bony edge.

Can I use a capo for C#m7b5?

Yes. A capo lets you play C#m7b5 with an easier open shape: use the chord transposer to find which shape to play for a given capo fret.

Why is C#m7b5 called half-diminished?

A fully diminished 7th chord has a diminished 7th; C#m7b5 has a minor 7th instead, so it is "half" diminished.

C#m7b5 Chord on Guitar: 3 Easy Ways to Play It (Charts)

C#m7b5 Chord on Guitar: 3 Easy Ways to Play C Sharp Minor Seventh Flat Five (Charts)

C#m7b5 chord charts with finger numbers, an easier version, the notes and intervals, and the keys and progressions that use it. Also searched as c#m7b5 chord, c#m7b5 guitar chord and how to play C#m7b5.

By David Sandy, guitar player and founder of Sandy Music Lab. Every chord shape on this page is checked note by note against the chord's formula.

Barre (4th fret, A-string root)
x 4 5 4 5 7

Easy 4-string version
x x 11 12 12 12

Movable shape (9th fret)
9 10 9 9 12 9

Numbers are fingers (1 index, 2 middle, 3 ring, 4 pinky, T thumb). × = don't play that string, ○ = play it open. A long bar is a barre: one finger flat across those strings. Strings run low E (left) to high e (right).

Chord chart by Sandy Music Lab

Quick answer: To play C#m7b5 (C sharp minor seventh flat five) on guitar, play x 4 5 4 5 7 from the low E string to the high e string (the barre (4th fret, A-string root) shape). The chord contains C#, E, G, B. If that is hard, use the easier shape x x 11 12 12 12, which needs 4 fretted notes.

C#m7b5 chord facts

Chord	C#m7b5 (C sharp minor seventh flat five)
Other names	C#ø7, C#min7b5, C#-7b5, Dbm7b5 (enharmonic spelling, same notes and shapes)
Notes	C#, E, G, B
Intervals	C# (root), E (minor 3rd), G (diminished 5th), B (minor 7th)
Formula	1-b3-b5-b7
Difficulty	Intermediate (barre or stretch)
Shapes on this page	3

How do you play C#m7b5 on guitar?

The main shape is x 4 5 4 5 7 (Barre (4th fret, A-string root)). Finger by finger: