An adjusting member is pivoted on a sound post to adjust a length of the sound post from the outside of the sound box of a musical instrument. The adjusting member comprises a main body and at least one adjusting arm arranged on the main body. Through the sound post provided with the adjusting member, a user can easily adjust the tightness of the sound post against the upper and lower plates of the sound box through a hole of the sound box, such as F sound hole, connected with the outside to achieve the effect of adjusting timbre of the musical instrument.

A guitar is provided which has a guitar neck. At least the fretboard of the neck is made of a high-density bamboo, that is, a compressed grass, instead of a wood. The guitar may be an electric guitar. In an alternative, the entire neck can also be made of high-density bamboo. The high-density bamboo is planed from compressed raw strips horizontally or vertically glued together and pressed to form high-density bamboo, known as HDG bamboo or strand woven bamboo. The frets on the fretboard are inserted into milled grooves in the fretboard in the usual manner. The curvature between the guitar neck and the guitar head can be produced by bending a single-piece wooden workpiece after steaming so that the wood fibres running along the guitar neck run continuously into the guitar head.

An acoustic string instrument includes a top plate, a back plate, and a body disposed between the top plate and the back plate. The body has a plurality of first positioning portions. At least one of the top plate or the back plate, or both has a plurality of second positioning portions. The first positioning portions are fixed to the second positioning portions corresponding to the first positioning portions.

A manufacturing method for a board for a stringed instrument that is used as a top plate or a back plate of an acoustic stringed instrument such as a violin, where the board has a purfling, includes forming, for instance, a groove with a depth that is 20% or more and less than 60% of a thickness of the board for a stringed instrument, filling the groove with a resin in which, for instance, colored particles having a diameter of 3 ?m or more and less than 70 ?m are dispersed and which has a degree of elongation of 20% or more, removing the resin that has flowed out of the groove, and curing the resin.

A method of treating an instrument string comprising the steps of: (a) securing both ends of the string, while the string is not on an instrument, to an apparatus that can apply tension to the string, the string having a longitudinal axis; (b) applying sufficient tension to the string with the apparatus along the longitudinal axis of the string to elongate the string by at least 0.3% without breaking the string; and (c) releasing at least part of the tension of step (b), wherein at least part of the elongation from step (b) remains.

An improved adjustable bridge is described for a stringed musical instrument. The adjustable bridge has a pair of feet attached to the bridge body. A pair of legs is attached for the bridge body using adjustable rod pegs. These rod pegs are adjustable so that the bridge may be moved upwards and downwards to achieve the desired bridge height.

A learning device assembly for a stringed instrument includes one or more light strip members, at least one light element in the one or more light strips, a connecting member electrically connected to the one or more light strip members, a controller electrically connected to the connecting member and configured to electrically drive the at least one light element in the one or more light strip members and a computing device communicatively coupled to the controller, the computing device configured to be programmed with or more music arrangements and enable the controller to illuminate one or more of the at least one light element in the one or more light strip members to enable a playing of one or more music arrangements on the stringed instrument.

A musical instrument slide for a stringed instrument and a method of manufacturing the same includes a slide body defining an outer wall, the outer wall configured to affect sound produced by the instrument when applied to one or more strings of the instrument. The slide includes an insert within the slide body defining an inner wall and creating a space between the slide body and the insert and further includes liquid within the space between the slide body and the insert to further affect the sound produced by the instrument when the outer wall is applied to the strings. A removable collar may be included with an aperture or opening that may vary in size to accommodate multiple users. Liquid may be selectively sealed between the slide body and the insert and be changed as required.

In a method for improving the acoustic properties of spruce resonance wood for musical instruments at least one resonance wood blank is subjected to a treatment with Physisporinus vitreus under controlled, sterile conditions. The previously sterilized resonance wood blank is immersed into a liquid medium enriched with fungus myecelium and kept therein in the dark for an exposure time and finally sterilized, wherein during the exposure time a temperature of 18 to 26 C. and a relative humidity of approximately 60 to approximately 80% are maintained. Due to the fact that the liquid medium contains nanofibrillated cellulose (NFC) in an amount of 200 to 300 g per liter, a reproducible, uniform improvement of the acoustic properties of the resonance wood free from local defects is ensured.

The board for a musical instrument according to the present disclosure includes: a first base layer; and a pair of first reinforcement layers laminated on both face sides of the first base layer, in which the first reinforcement layers includes a fiber and a binder, and the fiber is a polyparaphenylenebenzobisoxazole fiber, a liquid crystal polyester fiber, an aramid fiber, a polyarylate fiber, an ultra high-molecular weight polyethylene fiber, a polyethylene naphthalate fiber or a glass fiber.