Disclosed herein are various embodiments of devices and systems which may be reversibly coupled to a sound hole of a hollow-bodied stringed instrument for the generation of percussive musical sounds. Various embodiments herein disclosed comprise various means of reversibly coupling a percussive attachment with a musical instrument, and comprise adjustable device body lengths and angular orientations relative to the hollow body of musical instruments so as to allow percussive sound-generating elements to produce musical sounds from within a resonating chamber of the hollow-bodied instrument through interaction with an inner surface thereof.

Disclosed herein are various embodiments of devices and systems which may be reversibly coupled to a sound hole of a hollow-bodied stringed instrument for the generation of percussive musical sounds. Various embodiments herein disclosed comprise various means of reversibly coupling a percussive attachment with a musical instrument, and comprise adjustable device body lengths and angular orientations relative to the hollow body of musical instruments so as to allow percussive sound-generating elements to produce musical sounds from within a resonating chamber of the hollow-bodied instrument through interaction with an inner surface thereof.

A fret leveling apparatus that is configured to provide leveling of frets on a fret board of a stringed instrument such as but not limited to a guitar. The present invention includes a body wherein the body in its preferred embodiment is rectangular in shape. The body includes a first end and a second end and further has an upper edge surface and a lower edge surface. The lower edge surface is operable to engage the frets during use of the present invention and has an adhesive material secured thereto. The body includes a first aperture and second aperture having a first height adjustment member and a second height adjustment member operably coupled therein. The first height adjustment member and second height adjustment member are constructed so as to provide calibrated incremental height adjustment of the body with respect to the fret board once placed thereon through rotational movement.

A fret press system can install one or more frets in grooves of a substrate with a press connected to a caul. The fret may be positioned atop the groove prior to contacting the fret with a caul by operating the press. The fret may initially be forced into the groove with the caul with a first pressure before an incorrect fret position in the groove is detected with a sensor connected to the press. The caul can then be adjusting to correct the sensed incorrect fret position and subsequently used to finish installing the fret in the groove prior to a position of the fret in the groove being confirmed with the sensor.

Disclosed herein are various embodiments of devices and systems which may be reversibly coupled to a sound hole of a hollow-bodied stringed instrument for the generation of percussive musical sounds. Various embodiments herein disclosed comprise various means of reversibly coupling a percussive attachment with a musical instrument, and comprise adjustable device body lengths and angular orientations relative to the hollow body of musical instruments so as to allow percussive sound-generating elements to produce musical sounds from within a resonating chamber of the hollow-bodied instrument through interaction with an inner surface thereof.

Disclosed herein are various embodiments of devices and systems which may be reversibly coupled to a sound hole of a hollow-bodied stringed instrument for the generation of percussive musical sounds. Various embodiments herein disclosed comprise various means of reversibly coupling a percussive attachment with a musical instrument, and comprise adjustable device body lengths and angular orientations relative to the hollow body of musical instruments so as to allow percussive sound-generating elements to produce musical sounds from within a resonating chamber of the hollow-bodied instrument through interaction with an inner surface thereof.

A sensing fretboard for stringed instruments is described herein with respect to a guitar. The present invention includes custom frets and a modular sensing array that can be incorporated into a fretboard and coupled to the guitar. By measuring the dynamic forces applied by the players on the frets and strings of the guitar, musicians can be warned in real time during practice, when their grip is too strong, and to help musicians learn and recover from injuries.

A capo for a musical instrument with a neck and a plurality of parallel strings disposed above the neck. The capo includes a U-shaped yoke having first and second branches, and a clamping bar assembly pivotally attached to one of the yoke branches. The clamping bar assembly includes a main bar body and a plurality of separate string clamp members, which are operatively attached to the main bar body and formed of a substantially rigid plastic material. The clamping bar assembly also includes one or more flexibly resilient cushion members provided between the string clamp members and the main bar body. The main bar body may have sockets formed therein which receive individual cushion members and portions of the string clamp members. Alternatively, the string clamp members may share a single elongated cushion member, and may have passages formed therethrough allowing for slidable mounting on a solid main bar body.

Electroacoustic bouzouki with perforated vessel, for exercise as well as for concerts having a neck (1) which reaches until tailpiece (2), head (3), tuning keys for fastening strings (4), electromagnet (5) and bridge (6) on the front part (7) over which the strings pass (4), preamplifier (9) and amplifier (10) in its body, output (12), electric signal and battery (16), bearing, a rear part called vessel (13). The vessel carries on its surface at least one user-defined opening of any shape and is mounted on the front part (7) of the body by gluing or screwing. The best use of the electroacoustic bouzouki with perforated vessel takes place when the number of openings ranges from 2 to 6.

An apparatus for emulating a variety of string instruments with a variety of configurations in order to measure the resulting, actual tension of a string on that instrument. The tension may be measured in real-time.