Aguinaldo da Silva 9-chambered ocarina - click on the photos at the upper right section of the page (added 2004/05/17) Artists and Builders>http://www.culturalbandepe.com.br/scripts/r_artista.php?referencia=0117
Aketa Doublet Ocarinas - historical Aketa used to produce T-14C and T-4F models. They are called 'doublet' because there are two sound holes (voicing) and chambers. It is two Ocarinas combined in one. (added 2004/10/12) Artists and Builders>http://www.ne.jp/asahi/suimin/japan/doublet_e.htm