FLUTE The flute is generally made of silver, though older instrument is made of wood, and gold is occasionally used. The timbre of the flute varies considerably at different ranges, the lowest tones being thick and breathy, the higher ones becoming brighter and more penetrating. The modern flute embodies the revolutionary constructive principles introduced by Theobald Böhm (1794-1881) in the middle of the 19th century.	Blow Hole Keys