Hello Bruma through the index and links.
regarding the child, are still far behind with work ... I realized a mistake I hope not too severe-level tuning of the soundboard, obviously now the case is closed, and I'm not going to open it again, I hope not to lose too many frequencies.
Will I have problems with the lateral propagation of sound! guitar, or rather altoguitars, and perhaps too small, the scale of the normal 60 pitch, but this was the only test to achieve a result with a most suitable materials and on a larger scale!
As I proceed with more pictures and post them all work.
now I have problems with the availability of ebony for the keyboard, I think I'll have to join two classic keyboards.
marks the keys fall like the classic in altoguitars?

Another problem is finding one who can play, in my part I found musicians who use them, I hope a lutenist could succeed, at least record a small audio file.

Greetings Walter