Below are photos of the "Songstone" ocarinas I have collected made by John Langley (United Kingdom).
These appear to be made of the same type of clay and glazes as his larger pendant ocarinas.
These ocarinas are not in concert pitch, but are "in tune with themselves." They use the 4 hole "English" fingering system which has the range of one octave. The tone is very bright and clear.
