The flute is a family of musical instrument of the woodwind group. Unlike woodwind instruments with reeds, a flute is an aerophone or reedless wind instrument that produces its sound from the flow of air across an opening. According to the instrument classification of Hornbostel–Sachs, flutes are categorized as edge-blown aero-phones.
A musician who plays the flute can be referred to as a flute player, flautist, flutist or, less commonly, fluter or flutenist.
Aside from the voice, flutes are the earliest known musical instruments. A number of flutes dating to about 43,000 to 35,000 years ago have been found in the Swabian Alb region of Germany. These flutes demonstrate that a developed musical tradition existed from the earliest period of modern human presence in Europe.