Okay, I recently went a little nuts and bought this old man. I couldn't stop looking at his pictures and promised myself I wouldn't invite him home unless the price dropped. It did, and I jumped. I knew I was taking a risk on the tuning (I'm strictly a G/C player so far) but I thought I could piece it together.
The tuning was advertised as F#/B/E, but the number of sharps and flats on this thing is unreal. (I have, for example, nine buttons that play F#, seven that play E flat, and no natural C on the instrument anywhere.) None of the scales offered in Milleret & Pignol's Volume 4 are playable. As far as I can tell, the scales accessible are F# Major (or B Major, I'm not sure), B melodic Minor, and E Major, but I confess to knowing very little about all that.
My question to you all, I think, is what do I do with this guy? What kind of music was he designed to play? If anybody has any information about this kind of instrument or any resources that would help me start figuring things out, I would greatly appreciate it.