In hago, we use the alto, prime, bass and contra guitars - based on the Niibori instrumentation.
Here, you'll find brief information on other members of the guitar family - a bewildering collection containing, amongst others ...
Yet more six-string guitars
- Soprano, octave or piccolo guitar
- Terz guitar
- Quart and Quart Bass guitar
- Quint and Quint Bass guitar
- Requinto
- Treble Guitar
- Baritone Guitar
- Guitarron
Four string guitars
Thanks to computer imagery, here are the scale lengths for all the 6-string guitars we mention, from contra to soprano.

There's a bit of artistic licence here...
In the classical guitar family the neck width stays pretty much constant
- our photo manipulation just can't do that!
The treble, classical, baritone and contra form a (rare) ensemble closely related to the Niibori orchestration (but just different enough that Niibori music can't be played without two lines being re-written in another key).
Although this section is not exhaustive (we're missing the baroque guitar amongst others), we'd be the first to admit that it's exhausting!