Hamlett 11 Hole Alto C 

The Alto C 11 hole single chamber ocarina is perhaps the best playing ocarina I make.  With a slightly smaller internal chamber and voicing than the 12 hole Alto C, the tone is richer and fuller throughout the full range from B4 to F6.  It takes just a bit more breath than its 12 hole cousin, giving the sound a very slight hint of texture.  The breath requirements, although slightly higher, are still moderately easy with a gently sloping breath curve, slightly steeper at the very top to enhance the clarity and expressiveness of the high notes.  It is fully chromatic and capable of play all sharps and flats.

Learn more about 11 vs. 12 hole ocarinas here