F# m7b5 Chord on Octave Mandolin
How to play the F# m7b5 chord on Octave Mandolin: fretboard diagrams, finger positions, the notes that build it, and alternate voicings up the neck.
The F# m7b5 chord is a half-diminished (m7b5) chord, central to the minor ii–V–i. It is built from the notes F#, A, C, E. This page shows how to play F# m7b5 on Octave Mandolin with clear fretboard diagrams and suggested finger positions.
The shape nearest the nut leaves the A and E strings open and takes the rest at fret 10, reaching across 2 frets. F# falls on the G string. It sounds from F#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 F# 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.