The whistle flute in this demonstration is an end-blown ducted flute similar to a recorder or Irish pennywhistle, which has an airduct assembly at one end and a series of finger holes. This flute is challenging to make but easy to play. Successfully make one or two of the four-hole ocarinas and you’re ready to give this instrument a try. For variety, experiment with different tube lengths to develop different pitches and try bending the tube into different shapes. As with the previous projects, most any type of clay can be used. What’s important is to begin with fresh, well-wedged clay.