F 7#9 Chord on Mandocello

How to play the F 7#9 chord on Mandocello: fretboard diagrams, finger positions, the notes that build it, and alternate voicings up the neck.

The F 7#9 chord is an extended or altered dominant that stacks ninths, elevenths, thirteenths, or chromatic tensions over a dominant-seventh core. It is built from the notes F, G#, A, C, D#. This page shows how to play F 7#9 on Mandocello with clear fretboard diagrams and suggested finger positions.

The shape nearest the nut leaves the A string open and takes the rest at fret 1, reaching across 5 frets. F falls on the C string. It sounds from F2 up to A3.

Mandocello 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.