A single-tool step gauge provides for measuring or setting a preferred or desired height of a string above a surface of a stringed musical instrument, and includes a nut slot gauge, crown height gauge and string action gauge. The nut slot gauge includes a downwardly-extending tab, a first plurality of integrally-formed graduated length gauges that measure a nut slot height, and a first plurality of measurement indications corresponding to the first plurality of graduated length gauges. The crown height gauge includes a pair of feet, a second plurality of integrally-formed graduated length gauges that measure a fret crown height, and a second plurality of measurement indications corresponding to the second plurality of graduated length gauges. The string action gauge includes a base, a third plurality of graduated length gauges that measure a string action, and a third plurality of measurement indications corresponding to the third plurality of graduated length gauges.

A humidity modifying auxiliary tool having a superior humidity modifying effect is provided. A humidity modifying auxiliary tool capable of being installed in a condition where the humidity modifying auxiliary tool covers a sound hole provided on a body part of a stringed instrument includes: a lid portion capable of covering the sound hole; a frame portion provided at a back side of the lid portion, the frame portion being equipped with a humidity modifying sheet retaining portion to retain a humidity modifying sheet to modify humidity of the body part.

A humidity modifying auxiliary tool having a superior humidity modifying effect is provided. A humidity modifying auxiliary tool capable of being installed in a condition where the humidity modifying auxiliary tool covers a sound hole provided on a body part of a stringed instrument includes: a lid portion capable of covering the sound hole; a frame portion provided at a back side of the lid portion, the frame portion being equipped with a humidity modifying sheet retaining portion to retain a humidity modifying sheet to modify humidity of the body part.

A foldable stringed instrument having a neck and/or body that may assume a reduced profile by folding an upper neck portion away from the playing position through the use of a translating bridge assembly and a translating truss assembly, wherein the foldable stringed instrument is capable of housing or otherwise being coupled to any of a variety of electronics or electrical components (e.g. a smart phone or tablet computer) having one or more applications (apps) for driving the operation, functionality and/or effects associated with the foldable stringed instrument.

A foldable stringed instrument having a neck and/or body that may assume a reduced profile by folding an upper neck portion away from the playing position through the use of a translating bridge assembly and a translating truss assembly, wherein the foldable stringed instrument is capable of housing or otherwise being coupled to any of a variety of electronics or electrical components (e.g. a smart phone or tablet computer) having one or more applications (apps) for driving the operation, functionality and/or effects associated with the foldable stringed instrument.

A vibration applying apparatus includes a bone conduction speaker, a pedestal to which the bone conduction speaker is fixed, and supporting units on which a stringed instrument is placed, and is designed to transmit natural vibrations emanating from the bone conduction speaker to one of the supporting units via the pedestal.

A musical instrument pitch changing apparatus for a musical instrument having at least a first and second string is disclosed. The apparatus includes a bender lever pivotally secured to the musical instrument, a rocker arm pivotally secured to the instrument with a bender saddle for varying the tension in the first string in response to movement of the bender lever between the first and second positions. A mount secures the rocker arm and bender saddle to the first selected string in a first bending configuration or to the second selected string in a second bending configuration. The rocker arm and bender saddle is movable between the first selected string and the second selected string of the musical instrument.

A musical instrument pitch changing apparatus for a musical instrument having at least a first and second string is disclosed. The apparatus includes a bender lever pivotally secured to the musical instrument, a rocker arm pivotally secured to the instrument with a bender saddle for varying the tension in the first string in response to movement of the bender lever between the first and second positions. A mount secures the rocker arm and bender saddle to the first selected string in a first bending configuration or to the second selected string in a second bending configuration. The rocker arm and bender saddle is movable between the first selected string and the second selected string of the musical 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 inner wall within the slide body creating a space between the slide body and the inner wall and further includes fluid, slurry or the like within the space between the slide body and the inner wall, which may further affect the sound produced by the instrument when the outer wall is applied to a string. A removable collar may be included with an aperture or opening that may vary in size to accommodate multiple users.

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 inner wall within the slide body creating a space between the slide body and the inner wall and further includes fluid, slurry or the like within the space between the slide body and the inner wall, which may further affect the sound produced by the instrument when the outer wall is applied to a string. A removable collar may be included with an aperture or opening that may vary in size to accommodate multiple users.