B m(add9) Chord on Octave Mandolin
How to play the B m(add9) chord on Octave Mandolin: fretboard diagrams, finger positions, the notes that build it, and alternate voicings up the neck.
The B m(add9) chord is an added-ninth chord that layers in a ninth without the seventh for an open, modern sound. It is built from the notes B, C#, D, F#. This page shows how to play B m(add9) on Octave Mandolin with clear fretboard diagrams and suggested finger positions.
The shape nearest the nut leaves the D string open and takes the rest at fret 4, reaching across 4 frets. B falls on the G string. It sounds from B2 up to B4.
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 B 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.