Eleven-stringed Alto Guitar.

Rodolfo Cucculelli Alto guitar. 

Alto guitar intonation 

G4-D4-A#3-F3-C3-G2-F2-E2-D2-C2-B1.

Gabriel Schebor_Alessandro Piccinini_Aria di Sarabanda.mp3.

 Another Alto guitar:

Rodolfo Cucculelli Custom guitars.