I have this recurring, sort of nagging thought about a five-course mandofamily thingy,
probably tuned CGDAE and strung in unisons, with a scale length of 20-22".
Once a long while ago there were discussions of five-course mandolins here, and a good deal of talk about intonation and fanned frets. Interesting stuff.
Are there builders who have done this, players who use these now, since all that talk?
Please tell me all about them?