G maj9 Chord on Octave Mandolin
How to play the G maj9 chord on Octave Mandolin: fretboard diagrams, finger positions, the notes that build it, and alternate voicings up the neck.
The G maj9 chord is a major extended chord that stacks ninths, elevenths, or thirteenths over a major-seventh foundation for a rich, jazzy color. It is built from the notes G, A, B, D, F#. This page shows how to play G maj9 on Octave Mandolin with clear fretboard diagrams and suggested finger positions.
The shape nearest the nut leaves the G and A strings open and takes the rest at fret 4, reaching across 4 frets. The root is the G string itself. It sounds from G2 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 G 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.