C# m7b5 Chord on Octave Mandolin
Play C# m7b5 on Octave Mandolin: diagrams, finger positions, intervals, and every voicing up and down the neck for this instrument.
The C# m7b5 chord is a half-diminished (m7b5) chord, central to the minor ii–V–i. It is built from the notes C#, E, G, B. This page shows how to play C# m7b5 on Octave Mandolin with clear fretboard diagrams and suggested finger positions.
The E course rings open in the lowest shape, with the remaining notes fretted at fret 2 over a 5-fret stretch. C# falls on the G course. It sounds from C#3 up to E4.
Octave Mandolin is strung in four courses of two, so each stopped note here sounds as two — which is why the shape rings thicker than the same grip on a single-strung instrument.
Browse alternate voicings to find the one that sits best under your fingers, then compare it with the other chord types built on C# or explore the same shape in nearby keys. The diagrams list the notes in each voicing so you can connect the shape to the theory behind it.