I really like the old instruments (Renaissance and Baroque) as well, not to be off topic, but have you ever visited this page: Link Removed ?
There are some really interesting variants of forerunners depicted.
As for the C-A-D-G tuning, I used that for some EBG improv work long before 5 string EBG instruments became popular. For me it was sort of not like trying to learn everything in that tuning, just the odd pieces I needed it for here and there. I could see approaching most alternate tunings for any instrument that way. A friend of mine plays lutes and other early instruments and he takes a classical guitar and tunes it several different ways depending on which period of music he might be playing. It never seems to throw him off. But I think he has learned certain pieces in one tuning or another, not one piece in several tunings. And I think that is probably the more common approach with anyone on any stringed instrument that uses more than one tuning. Maybe not, but it would make sense.
There are some really interesting variants of forerunners depicted.
As for the C-A-D-G tuning, I used that for some EBG improv work long before 5 string EBG instruments became popular. For me it was sort of not like trying to learn everything in that tuning, just the odd pieces I needed it for here and there. I could see approaching most alternate tunings for any instrument that way. A friend of mine plays lutes and other early instruments and he takes a classical guitar and tunes it several different ways depending on which period of music he might be playing. It never seems to throw him off. But I think he has learned certain pieces in one tuning or another, not one piece in several tunings. And I think that is probably the more common approach with anyone on any stringed instrument that uses more than one tuning. Maybe not, but it would make sense.
My Father (RIP) once told me that you always bring your wife along when buying a car...
Totally accidental, but typical of my luck. All of the eight basses were four string basses. 4 were equipped with what appeared to be identical extensions and all of these were mechanically keyed extensions;- not even one fingered extension, and no 5 string basses at all. The principal was playing a standard four string bass which was huge. It looked to me like a Prescott bussetto and had the joined f's. All the other basses were smaller and all had violin corners. I think there was only one flat back, but I digress. 