Abstract: The present invention concerns the body structure of a wind instrument and a procedure for making a wind instrument body presenting said structure. The body of a wind instrument, such as a flute, consists of an elongated tube composed of one or several parts (1), in said tube apertures (2) openable and closable with separate keys as required by playing, are made. As taught by the invention, the tube or its parts are made of plastic material, with which one or several fiber courses (4,5) are combined for reinforcement. An appropriate plastic material is epoxy plastic, and appropriate fibers are e.g. carbon fibers. With these is obtained a body construction which has a high rigidity and low mass and which produces sound with minimal blowing energy.

Abstract: The invention concerns an action (1, 2) for a wind instrument, comprising keys (6) pivoted turnably relative to the body (3) of the instrument, holes (5) in the body being openable and closable with said keys according to the player's operation for producing notes of different pitch. A key action of this kind is found e.g. on the flute and on other woodwinds. As taught by the invention, the action comprises keys (6) which have been provided with magnets (12) so that the magnet returns the key that has turned into its initial position when the player ceases to press the key or the touch acting thereon. The keys (6) may be open keys which stay open by effect of mutually repulsing magnets (12) and close when pressed by the player against the repulsion of the magnets, or closed keys which are kept closed by mutually attracting magnets and open when pressed against the attraction of the magnets by the player, by touches connected with the keys.