I printed a test piece at 15% using Cura 14.07. The ocarina printed out to be roughly 60 mm/ 2.5 inches in length and sounded like a recorder. Please note when you play an ocarina it much like playing a flute blow gently and at the proper angle to produce a note. Also make sure to clean up the whistle looking section to get a better sound. Happy printing!
Make the base layer print at 0.1. It helps with finishing.