A plastic ukulele has a sound board, a fretboard, a head plate and a lower half of the body integrated into a complete ukulele body. Attached to the bottom surface of the sound board are two paralleled outline reinforcing ribs which are in parallel with the outline of soundboard on the inside. The sound board has a sound hole in the upper middle part. Around the sound hole are two sets of lengthwise and widthwise paralleled reinforcing ribs. The part of sound board which is surrounded by the lower widthwise reinforcing ribs and the lower bout of outline reinforcing ribs is resonance section with a thickness of 1.0-1.4 mm only. Attached to the bottom surface of resonance section is a grid bracing structure in a one-piece molding with the sound board.

A musical instrument, which is one of musical instruments generating a sound using a sound board, the musical instrument designed to generate resonance of abundant and various sounds by separating a resonance space into several parts by simultaneously using several sound boards to one musical instrument, to enable a magnificent and wide-spectrum performance such as an orchestra as one musical instrument by implementing a high-level sound effect required when playing the musical instrument, such as not only an increase of a volume, but generation of an individual tone, depth of a sound, and a stereoscopic sense of a sound by applying various and new elements to each of several sound boards.

A musical instrument, which is one of musical instruments generating a sound using a sound board, the musical instrument designed to generate resonance of abundant and various sounds by separating a resonance space into several parts by simultaneously using several sound boards to one musical instrument, to enable a magnificent and wide-spectrum performance such as an orchestra as one musical instrument by implementing a high-level sound effect required when playing the musical instrument, such as not only an increase of a volume, but generation of an individual tone, depth of a sound, and a stereoscopic sense of a sound by applying various and new elements to each of several sound boards.

An improved body for a stringed instrument wherein the base of the neck slides into a body pocket and onto a flexible protrusion, both made of the body material. The flexible protrusion is drawn toward the pocket by a fastener thereby clamping the base of the neck to the instrument body. No metal parts attach to the base of the neck. The only metal parts involved are the threaded fastener which draws the flexible protrusion toward the pocket and the threaded insert in the flexible protrusion to which this fastener threads. Most of the clamping assembly is hidden inside the body and neck and is not visible when the body and neck are connected. The neck can be removed and replaced rapidly allowing instrument storage in a smaller space and allowing necks of varying scale lengths, fret configurations, or fretboard radius to be attached to the same instrument.

A tuning apparatus for a stringed musical instrument is provided. The apparatus includes a dual-action cam clamp assembly and a plurality of string-contacting members with easy-to-adjust rocker arms. The dual-action cam clamp assembly removably attaches to a desired longitudinal position on the instrument's neck. Each of the string-contacting members is rotatably supported by a rocker arm shaft, and the easy-to-adjust rocker arms are adapted to rotate about the longitudinal axis of a two-part shaft of the clamp assembly independently of the other string-contacting members. Each member also adjustably impinges upon and urges a given string or course thereof on the instrument toward a user-selectable one of three different longitudinal positions on the neck's front surface, these positions including a home position, a home−1 position, and a home+1 position.

A stringed instrument has a stringed instrument neck that is removably attached to a stringed instrument body. A back plate is attached to a recess in a back side of the stringed instrument body. A latching mechanism can be mechanically affixed to the back plate. A latch pin retainer of the latching mechanism can include a slot formed therein. A latch pin can extend through the slot of the latch pin retainer, where the latch pin can be resiliently urged into a first position, with a lip of the latch pin operable to be secured against a latch pin catch disposed in the stringed instrument neck. A button is operable to move the latch pin into a second position with the lip disengaged from the latch pin catch, permitting separation of the stringed instrument neck from the stringed instrument body. A headstock can further be removably attached to the neck.

The present invention is a thumb rest that has a wedge body that attaches to a string instrument such as a bass or guitar. The wedge body has fastening holes, extruded ridges, contoured edges, and a string instrument facing side. This allows for a less permanent modification to the instrument. The fastening holes are circular holes that traverse into the wedge body. The extruded ridges are rectangular sections extending from the wedge body. The string instrument facing side is the flat side of the wedge body. The proposed implementation allows a user to remove and or move the thumb rest at any time.

A device for altering the musical sounds produced by string instruments is disclosed. The device is adapted to be reversibly wrapped around and attached to a set of strings of a string instrument. The device includes a top portion and a bottom portion; an exterior surface and an interior surface; a sound altering material located on the interior surface at a location that is configured to make contact with the set of strings when the device is attached to a string instrument; one or more compartments located on the exterior surface that are configured to receive and hold a pick; and an aperture located on the exterior surface that is configured to receive and hold a string instrument tuner.

A guitar holder with a built-in guitar amplifier for enabling convenient guitar practice and/or play with a compact, space-saving footprint. The guitar holder may comprise any of a variety of guitar holders, including but not limited to a guitar stand and/or a guitar wall hanger.

An apparatus for manufacturing a guitar string includes a table part; a holding part holds both ends of a first wire so that the first wire is rotatable; a winding part which is movable in a direction in which the first wire is extended, so that the winding part sequentially winds a second wire around on the outer surface of the first wire being rotated; and a supply part for supplying the second wire to the winding part, wherein the supply part includes a height measuring part; a first pulley part including a movable pulley and a movable body; a bobbin part around which the second wire has been wound; a motor part for rotating the bobbin part; and a control part which controls the speed of the second wire supplied to the winding part by controlling the operation of the motor part.