The Recorder

The principal type of European flute from the 16th to the mid-18th century was the end-blown fipple flute called the recorder. It was usually built of wood and had eight finger holes. Its whistle mouthpiece made it easier to play than the transverse flute, for it required only good control of the breath to direct the air to a point that produced a soft, sweet tone.

Although not perfectly cylindrical in bore, it's accoustical behavior is essentially like an open cylindrical air column.