Abstract: An apparatus for mounting a pickup on a stringed musical instrument having a soundhole has a pickup housing which is adapted to be disposed in the soundhole of the instrument. An abutment member is connected by a threaded rod and an operator member to the pickup housing. The operator member is mounted on the rod and the abutment member so that operation of the operator member moves the abutment member along the rod into abutting engagement with the instrument when the pickup housing is disposed in the soundhole and the operator member is operated. This can form part of an electromagnetic pickup which defines a first magnetic pole beneath a first plurality of the strings of the instrument and which also defines a second magnetic pole beneath a second plurality of the strings of the instrument, wherein the second plurality is less than the first plurality.

Abstract: Disclosed is a musical instrument bridge for supporting a set of strings above a front face of a musical instrument. The bridge comprises a plate, a mounting block, and a plurality of fingers. The plate is attachable to a rear face of the instrument. The plurality of fingers are attached to the plate and extend towards a front face of the instrument. Each finger has a resonant frequency that is related to a predetermined pitch of the string supported by the finger. Each finger is designed to vibrate in a plane that is parallel to the front face of the instrument but to reduce vibration in a plane perpendicular to the front face of the instrument.

Abstract: A stringed musical instrument system having a body and a reversible neck. The neck is provided with a mounting assembly for selectively alternating the coupling of the neck to the body such that either of the broad surfaces of the body may be utilized as the front surface or back surface of the instrument. The mounting assembly includes a tongue and groove connection between the neck and body. In addition, electrical coupling between the neck and body is provided.

Abstract: A guitar, having a unique neck mounting system combined with a quick release lever allowing for rapid neck transformations from a normal playing position to a fully stowed position, when rotated on a plane parallel to main body surface, and placed within a shaped body recess in upper surface of main body. Neck to body joint having a pivotal hole through which a bolt is anchored at neck mounting base. Opposite end of bolt being attached, by a swiveling connection, to a quick release lever that when rotated provides a compressive force to neck body joint, or conversely allows joint to relax for purpose of rotating neck into body recess.

Abstract: A guitar can be collapsed into a compact condition by pivotably attaching the neck of the guitar to the guitar body, such that the neck can be overturned onto (or near) the upper face of the guitar body. The pivotable attachment includes two parallel swingable links that enable an end of the neck to move into or out of a recess in an end surface of the guitar body without disturbing the tension setting of the guitar strings. It is unnecessary to loosen the string tension prior to swinging the neck onto or out of the guitar body recess.

Abstract: A banjo has a resonator (24) mounted about the pot (11) and acoustical links (25) that acoustically couple the resonator with the banjo head (14). When the instrument is played acoustical waves pass from the head through the acoustical links to the resonator which amplifies the sound produced by the banjo. An adoption of this invention is also disclosed for a guitar.

Abstract: A musical instrument includes a neck, a body and a quick-release neck clamp adjacent the neck and the body. The quick-release neck clamp includes a neck plate attached to the neck, a body assembly with an elongated body assembly pocket attached to the body and at least one releasable fastener adjacent both the neck plate and the body assembly. The body includes a front surface formed on the body that defines a front surface plane, and the elongated body assembly pocket defines an axis that is parallel to the front surface plane.

Abstract: A light weight guitar construction and associated method of manufacture involves the use of a light weight wood core material having deposited thereover a strengthening layer preferably of carbon fiber and a fiberglass sheet layer both impregnated with a high temperature resin. A piezoelectric crystal transducer system is used individually with each string for sensing string vibrations. An improved fret board construction is employed. In one feature of the present invention each of the frets have coupled thereto circuit runs for signal coupling.

Abstract: A multi faced electric stringed musical instrument mounted on a single axle at rear end of straight through neck. A mechanical rotary device is attached to a separate open faced multi planar body which the axle runs through. Shoulder strap is mounted to top and bottom ends of body and then worn as a conventional guitar. This separate stationary body keeps the straight thru neck away from artist's body in proper playing position, free to rotate in either direction.Each face of the stringed instrument can be played independently or simultaneously with respect to each other.

Abstract: A neck rod member for stringed instruments, particularly for a bass guitar, includes two rod portions which extend parallel to each other and are mounted one above the other. The first ends of the rod portions are fixedly connected to each other. An adjustment device is mounted on the second ends of the rod portions for effectively shortening the length of one of the rod portions relative to the effective length of the other of the rod portions, so that a corresponding bending force is imparted on the neck rod member. The adjustment device includes a threaded shaft attached to the second end of one of the rod portions and an adjusting nut mounted with threaded engagement on the threaded shaft. A follower member is mounted on the second end of the other of the rod portions. The follower member is in driving engagement with the adjusting nut in axial direction of the neck rod member.

Abstract: An improved construction for the neck of a musical instrument, such as a guitar, is disclosed herein. The bottom surface of the neck of a musical instrument opposite to the fret surface, is provided with one or more elongated depressions extending along the longitudinal axis of the neck of the instrument. Each of the one or more longitudinal depressions being straight and shaped in a generally concave configuration adapted to fit a player's thumb, with the depression being located centrally or offset to one longitudinal side or the other of the neck of the instrument. In other embodiments, side depressions are provided between the central depression and an extending side edge of the instrument neck.

Abstract: An electric guitar (10) is disclosed as including spacers (50,52,54) and connector straps (56,58) that cooperate to provide mounting of the electric guitar on an acoustic guitar (12) in a spaced and fixed relationship. Three of the spacers are preferably utilized with one being an adjustable spacer (50) and two being end spacers (52,54) between which the adjustable spacer (50) is located in a central and rearwardly spaced position that also accommodates for adjustment of the guitar faces with respect to each other. In one embodiment, the connector straps (56,58) have a resilient construction and in another embodiment incorporate adjustable clamps (84,86).

Abstract: The invention is an electric guitar that has seven strings and a scale length of 25.5 inches. The highest string is a "top A" string that provides the guitarist access to higher notes than is available on a conventional guitar. This seven string guitar is constructed on a solid body and has a neck with twenty-four frets. The neck has "pronounced tapering" such that the proportionate relationship of the neck at the 24th fret and at the nut is greater in the present relationship than in the Fender Stratocaster guitar. The solid body has cut-aways on each side of the neck to permit fingering access to all the frets. The guitar has staggered headmachines so that the headmachine upon which the "top A" string is wound has a shorter post than those headmachines upon which the lower strings are wound. The guitar also has a vibrato bridge unit that is firmly connected to the solid body by two connecting screws and less than firmly attached to the solid body by two stabilizing screws.

Abstract: A guitar or other similar musical string instrument having a fret-bearing fingerboard of conventional size and shape in which are placed oblique, almost parallel, arcuate frets. Frets are arranged on the fingerboard of this invention in an oblique-to-the-string relationship, appearing almost parallel and slightly arced so as to maintain a correspondence between the fret-string intersections of the invention and the fret-string intersections of the similar conventional instrument. Arcing the frets, and departing from precise parallelism, assures maintenance of the diatonic scale and the corresponding fret-string intersection relationship between the invention and a similar, but conventional, instrument. Such a familiarity and correspondence allows seasoned musicians to convert over to the invention instrument(s) with little or no difficulty.

Abstract: A stringed instrument system comprising a body having a headward edge, a tailward edge, a upper edge, a lower edge, a front and a back. A first fingerboard extends beyond the headward edge of the body and a second fingerboard is located entirely on the body. The first fingerboard includes a fretted surface. A track runs beneath each fingerboard edge. The capo has an axis of rotation eccentrically located within the capo. A slider attached to the capo reacts against the track surface and pulls the capo hard against the fretted surface when the capo has been cammed against the fingerboard. The fingerboards may be removably secured to the body so that they are interchangeable.

Abstract: The invention is an electric guitar that has seven strings and a scale length of 25.5 inches. The highest string is a "top A" string that provides the guitarist access to higher notes than is available on a conventional guitar. This seven string guitar is constructed on a solid body and has a neck with twenty-four frets. The neck has "pronounced tapering" such that the proportionate relationship of the neck at the 24th fret and at the nut is greater in the present relationship than in the Fender Stratocaster guitar. The solid body has cut-aways on each side of the neck to permit fingering access to all the frets. The guitar has staggered headmachines so that the headmachine upon which the "top A" string is wound has a shorter post than those headmachines upon which the lower strings are wound. The guitar also has a vibrator bridge unit that is firmly connected to the solid body by two connecting screws and less than firmly attached to the solid body by two stabilizing screws.

Abstract: A combination guitar having a full acoustical hollow body with the standard neck, head and strings supported between tuners on the head to a bridge on the top panel of the guitar's acoustical body with a solid electric guitar body structurally attached to the side wall of the acoustical hollow body with a second neck, head and strings supported over electronic pick up devices to transmit to the amplifier with volume and balance control mechanisms for the electric portion of the guitar to balance with an acoustical pick up inside the hollow body for transmission to the amplifier.

Abstract: The invention disclosed is a rotating portable guitar system made of a multifaced neck body rotatably mounted between two clear plastic discs attached at each end of the neck body. A regular shoulder strap is connected at each end to one of the two discs for holding the discs stationary relative to the neck body for allowing the neck body to be rotatable therebetween. The rotatable guitar includes push/pull knobs mounted at one end of the neck body for turning the guitar on and off. The guitar is rotatably free wheeling between the discs by manually rotating it from one face to another.

Abstract: The tonal body disparity between low and high frequency in a stringed instrument and the like may be balanced out by providing asymmetrical mass loading wherein a larger mass is provided to the side of the guitar having strings of high frequency than to the other side. This may be achieved by actual embedding a rigid mass of density greater than that of the body of the instrument into said body.

Abstract: A body for an electronic stringed instrument is disclosed in which an inner metal chassis is provided with a removable and replaceable outer body shell. The chassis has a first end adapted to receive and secure a neck of a guitar or similar instrument and an opposite end adapted to receive and secure a bridge. The chassis has at least one opening in its upper surface adapted to receive and secure an electric pickup. The body of the outer shell includes a lower portion which is removably secured to the metal chassis and an upper portion which is removably secured to the lower portion. The outer shell creates a cavity into which various electronic components may be secured. Because the outer shell is removable, various outer shell shapes may be secured to a single chassis. Additionally, the metal chassis of the present invention provides superior resonance qualities over conventional solid wooden body guitars.

Abstract: A body for an electronic stringed instrument is disclosed in which an inner chassis is provided with a removable and replaceable outer body shell. The chassis is manufactured of metal or a particularly hard plastic. The chassis has a first end adapted to receive and secure a neck of a guitar or similar instrument and an opposite end adapted to receive and secure a bridge. The chassis has at least one opening in its upper surface adapted to receive and secure an electric pickup. The body of the outer shell includes a lower portion which is removably secured to the metal chassis and an upper portion which is removably secured to the lower portion. The outer shell creates a cavity into which various electronic components may be secured. Because the outer shell is removable, various outer shell shapes may be secured to a single chassis. Additionally, the chassis of the present invention provides superior resonance qualities over conventional solid wooden body guitars.

Abstract: Bridge for improving volume, power and sustaining quality in a stringed musical instrument of the type having a hollow body over which are stretched substantially parallel strings, each string being stretched. The string height is raised over the sound board. One end of a string may be anchored to a crossbrace on the underside of the sound board so as to directly vibrate this sound board. It also incorporates a means an adjustment mechanism for string length fine tuning. The result is increased sound, volume and resonance persistence which is without distortion that may result in increased amplification when applied to guitars or other stringed instruments.

Abstract: A stringed musical instrument, in particular a guitar, including a body with a soundboard having an upper portion, and a neck having one end connected to the upper portion of the soundboard so that a portion of the neck extends over the soundboard to a distal second end, the soundboard and neck are connected so as to form an obtuse angle therebetween so that a fingerboard located on the upper surface of the neck has an elevation from the soundboard which increases in the direction of the distal second end of the neck.

Abstract: A tremolo device comprising a base connected to an electric guitar, a clamp for holding and restraining the guitar strings, a handle for manipulating the device, a spring block connected to the base, a first support connected to the guitar, a first spring connecting the first support to the spring block and forcing the spring block toward the first support, a second support connected to the guitar, an elongated member having first and second ends, the first end connected to the second support and the second end contacting the spring block, and a second spring for forcing the second end of the elongated member against the spring block.

Abstract: A stringed musical instrument having a sound box including a resonator having a solid top wall and a resonator chamber opening through the bottom surface of the sound box, and a bridge bar in contact with both the top wall of the resonator and the strings of the instrument.

Abstract: An electric guitar having a body and a neck that supports a fret board is provided with a neck that removably fits into a slot in the body. The guitar neck is constructed so that the portion of the mounting portion of the neck that fits into the body slot is of constant dimension, regardless of the fret board width, while the remaining portion of the mounting end is as wide as the fret board.

Abstract: A self-aligning neck joint for releasably securing the neck of an electric guitar to the guitar body and maintaining the neck in fixed proper alignment with the body. The neck joint includes a first bracket secured in a channel in the underside of the upper end of the neck and a second bracket secured in a neck pocket in the guitar body such that upon securing the brackets together the neck is secured to and fixed in proper alignment with the guitar body. The brackets each define a pair of rows of interlocking undercut teeth with one of the rows of teeth on the second bracket being moveable in a transverse direction for selective engagement and disengagement with the mating teeth on the first bracket to allow the brackets to be moved out of engagement and the neck separated from the guitar body.

Abstract: A component multi-necked string-instrument is disclosed. At least two instruments are flexibly connected to enable multiple instrument playing with fluidity and ease. The instruments are reverse-strung, stream-lined, having conventional tunings means angularly recessed rearward of the bridge section. Electrical control means are likewise recessed. A limited headstock is also provided for string anchoring, balance and playing ease.

Abstract: A fine tuning mechanism in a tremolo unit of an electric guitar which includes a body section having a horizontal portion and a vertical portion rising from a rear end side of the horizontal portion and formed in an L-like shape, and a block section extending downward from the horizontal portion of the body section. The horizontal portion has a bridge saddle held thereon, a slider is held on the bridge saddle and is slidable in a longitudinal direction and a fine tuning screw is provided for sliding the slider in the longitudinal direction. The fine tuning mechanism allows a muted performance to be accomplished smoothly and the fine tuning can be performed smoothly at a light touch while obtaining a large adjustment width.

Abstract: A collapsible stringed musical instrument having an elongated body with a coupling portion at one end, a string bridge portion at the other end, a playing face and an opposite back face. A neck is provided with a coupling portion at one end and a string peg portion at the other end. The coupling portion of the neck is adapted to mate with the coupling portion of the body. A plurality of supports are pivotably affixed at one end to the back face of the body. The supports pivot from a closed position in which they are substantially situated within the outline of the elongated body to an open position in which they substantially extend beyond such outline.

Abstract: A tremolo bridge for an electric guitar has a fine tuning mechanism installed thereon. Fine tuning screw heads 43 have coplanar top surfaces 44 which do not rise or fall as tuning is effected. When actuated, heads 43 move screws 47 vertically to act on strings 29 through string securing levers 35. With this structure, the tuning heads form an essentially flat surface providing a seat or rest for the hand or forearm of the guitarist.

Abstract: A tremolo unit mechanism for an electric guitar includes a bridge base vertically disposed to be pivotal about a support point on a body, balancing springs for causing a balance moment along a direction opposite to that of a moment due to a tension of strings to act on the bridge base, bridge main bodies, disposed on the bridge base, for holding one end of each of the strings, octave adjusting screws, threadably engaged with the bridge base, for moving the bridge base along a front-to-rear direction, a tremolo arm, mounted in the bridge base, for moving the bridge base vertically, and a control mechanism for controlling pivotal movement of the bridge base. The control mechanism includes an engaging member for engaging with the bridge base and a screw member for controlling pivotal movement/displacement of the engaging member.

Abstract: A guitar mute has a tubular body of elasticized terrycloth. Hook and eye fasteners provide selectable tension on the strings when the mute is attached to the neck of the guitar. A felt pad sewn into the middle of the mute adapts to the contour of the fingerboard. Being slightly shorter than the distance between the two outermost strings, the felt pad, along with the elastic in the tubular body, provides an even pressure to all strings. The mute can be slid along the neck with one hand without removing the mute from the guitar.

Abstract: An improved fulcrum tremolo is disclosed, characterized by a unique mounting system and a novel adjustable bridge and fine turning assembly. A pair of screws having a blade-like heads are connected with the body of a musical instrument. The tremolo is arranged in a recess in the body of the instrument and includes in its forward edge tapered recesses to receive the screw head edges for pivotal movement thereabout. An adjustable bridge and fine turning assembly for the instrument strings is connected with the tremolo. For each string there is provided a body portion having a pair of rollers for supporting the string, and a tubular member for receiving the string. The tubular member is arranged in a recess within the tremolo. Harmonic tuning is adjusted by sliding the body portion and tube within its recess longitudinally, essentially without altering the tuning of the string. A string securing member is connected with the tremolo to vary the tension of each string.

Abstract: An improved electric stringed instrument which can produce "banjo" sounds. The instrument has a banjo head including a taut flexible membrane mounted on a ring which is mounted on a solid material (preferably wood) body. The ring and body are connected in a conventional manner to a fretted neck extending away from the head. A plurality of strings extend from adjustable securing means at the end of the neck over the flexible membrane to a tailpiece secured to the body. A bridge is positioned between the strings and membrane. One or more recesses in the body below the membrane contain electric pickups. The spaces between the sides and bottoms of the pickups and the adjacent surfaces of the recesses are at least partially filled with resilient foam. The foam beneath the pickups is compressed slightly to keep the upper pickup surface in resilient contact with the membrane.

Abstract: Located on the body as distinguished from the headstock of an instrument such as a guitar is a combined bridge, string lock and fine tuner. The upper end of each string is attached to the headstock. The lower end is fixed to a ratchet thumbwheel rotatable on a transverse axle mounted in a body fixed to the instrument. By turning the ratchet wheel a rough adjustment of string tension is made. A fine tuning knob controls the pawl of the ratchet for precise turning of the ratchet wheel. A slide is longitudinally adjustable in a groove in the upper end of the body. A screw is threaded into the slider and formed with a slot for the string. The screw stops the vibrating length of string.

Abstract: An even tuning tremolo system for a stringed musical instrument has a body, a neck extending from the body, and strings having a neck end, a body end, and a body end portion extending from the body end. A nut and bridge define the vibrating portion of the strings. A tremolo tail piece pivots about a pivot point and anchors one end of each string while varying the absolute pitch of the strings and maintaining the relative pitch of the strings during pivoting. The strings are anchored at different relative lever angles, the lever angle defined as the lever angle formed between the body end portion of the string and a line segment between the body end of the string and the pivot point.

Abstract: A guitar having in the preferred embodiment a shielded electro-luminescent lamp located behind the plastic pickup guard material of the guard in a preselected configuration. The electro-luminescent lamps are encapsulated in appropriate shielding material to prevent interference with the guitar's amplifier circuitry and are driven by a shielded control circuit having a controllable flashing circuit.

Abstract: Means for tensioning the strings of a guitar includes a rotary adjusting member, a manually operable control member, and a worm gear type drive means connecting the control member to drive the adjusting member. The adjusting member includes a portion for holding the tail end of a string that is supported on a string tensioning portion of the adjusting member. The string tensioning portion includes a convex surface that is eccentric with respect to the axis about which the adjusting member rotates and is constructed so that there is a non-linear relationship between incremental movements of the adjusting member and tensioning of the string, with this relationship being such that the rate of string tensioning decreases as the magnitude of string tension increases.

Abstract: The bridge of a guitar includes a movable bridge plate normally pivotable relative to the body of the guitar so as to change the string tension and produce a tremulous tone effect. Alternatively, the bridge-mounting plate can be locked in fixed position relative to the remainder of the guitar. A low friction mounting for the bridge-mounting plate consists of a linear, sharpened leading end or ends of the plate received in a linear transverse groove or grooves of a mounting flange. Preferably, the pivot axis of the bridge plate lies in a vertical plane closely adjacent to the location where the guitar strings cross the bridge so that pivoting movement of the bridge plate to produce the tremulous tone effect does not result in a large change of the height of the strings above the guitar body. A separate saddle is provided for each string and gear-actuated adjustment mechanism is operable to adjust the longitudinal position of each saddle.

Abstract: A tremolo arm for the tremolo plate of a stringed musical instrument wherein the portion of the arm which is received in the tremolo plate is provided with recesses in which are disposed respective annular plastic rings that engage the underside of a sleeve on the tremolo plate. This construction obviates unwanted and unintended vibration.

Abstract: A tremolo plate is pivotally mounted on the guitar body, and a plurality of a combination bridge saddles and lever systems are mounted on such plate, there being one such saddle-lever system for each string of the guitar. The combination systems include saddles adapted to be pivoted by set screws to change string height. They further include levers adapted to be adjusted by screws to effect fine tuning of the strings. The heads for the fine tuning screws are captured by ears. The pivot means for the tremolo plate have a pivot axis so related to the string saddles that the intonation points of the saddles may be adjusted between positions closer to the guitar neck than is such axis, and positions farther from the guitar neck than is such axis.

Abstract: A guitar having a vibrato bridge assembly and a string lock mechanism for locking the strings at the intersection of the head and neck is provided with a fine-tuning mechanism on the bridge assembly. The tuning mechanism includes tuning knob elevator screws which are generally perpendicular to the face of the body of the guitar and which are easily accessible. Rotation of the tuning knob screws is coupled via an L-shaped rocker element to cause translational movement of the guitar strings thereby to adjust their tension and pitch. Rocker mechanisms are disclosed which minimize vibrational interference between adjacent rocker elements.

Abstract: A tailpiece and bridge assembly for a stringed musical instrument, comprising a housing attachable to the body of the instrument at the tailpiece. The housing having a pivot axle extending across it. A respective pivot lever for each of the instrument strings being pivotable about the pivot axle between a position toward the body and an upraised position. A string end securing body supported on the pivot lever and screw threadedly adjustable in position therealong for adjusting the tension of the string. A saddle disposed between the pivot axle and the string securing body, and upon the lever being lowered, the string wraps about the top of the saddle, initially tensioning it. A latch on each lever releasably latches the lever to the housing.

Abstract: A guitar-like electronic musical instrument for use with a synthesizer (18) has a body (20) and a neck (22). The neck carries six pitch strings (40) which the player depresses onto conductive frets to determine the selected note. The body carries six trigger strings (50) which can be plucked or strummed to initiate or trigger the desired notes. Alternatively they can be triggered by six keys (70). The trigger strings (50) and pitch strings (40) are at an angle to each other. The three lower strings and the three higher strings can be triggered together by group trigger keys (300,302) and all six strings triggered by a master trigger key (204). If either of switches (200,202) are actuated, notes will be triggered automatically as soon as the pitch string is depressed onto the fret. Touching of the string is detected by an a.c. waveform superposed on a d.c. potential. Hall effect devices are used to sense triggering by the trigger strings (50) or keys (70).

Abstract: The tonal body disparity between low and high frequency in a stringed instrument and the like may be balanced out by building the guitar having unsymmetrical mass loading wherein a larger mass is provided to the side of the guitar having strings of high frequency then to the other side. This may be achieved by actual peripherally mass loading a conventional guitar, building a guitar with a cross-section substantially resembling a tear-drop, said cross-section being taken in a plane substantially perpendicular to the upper surface of the guitar and equally perpendicular to the principal longitudinal axis of the neck of the guitar or a combination thereof.

Abstract: A musical instrument sound quality enhancement device comprised of a circular shaped planer sound hole cover adapted by opposingly positioned underside sets of spaced angularly outward and downward projecting pliable affixment fingers to thereby enable insertably installed occlusive attachment of the cover within the circular shaped sound hole opening of a guitar, banjo, ukulele, dulcimer or any similar such stringed instrument the use of which eliminates feedback interference otherwise common to an amplifier equipped instrument of the type described, or with a ported variably occlusive sound hole cover version thereof not only accomplish amplifier feedback interference elimination when employed in a port fully closed configuration but when employed in a port variably set occlusive sound hole cover partially open configuration alternately effect instrumental tonal variations.

Abstract: An adjustable bridge and tuning unit for a stringed musical instrument, the instrument including a body, a neck portion extending from the body, a plurality of strings extending over a part of the body and the neck portion, and means for securing the strings at one end to the neck portion, the bridge and tuning unit comprising a base member fixedly mounted to the body, the base member including a pair of sidewalls defining a channel therebetween; a plurality of individual bridge saddles, one of the bridge saddles corresponding to and aligned for supporting each of the strings, each said saddle generally comprising a rectangular paralleli piped, and having a groove on one surface thereof for alignment with the string. The bridge saddles are positioned in abutting relation within the channel and one of the saddles is in frictional contact with one of the sidewalls.

Abstract: The present invention is directed to a string device in which the neck is selectively positionable between the body and the head of the device in order to allow a musician to select the appropriate neck for the instrument in accordance with his desires and musical needs. The neck includes a finger board which can be formed from a material different from the neck, and metal bars such as frets can be positioned on the finger board. The necks cannot only be easily replaced, but the neck or handle is adjustable under the chords or strings even while it is attached to the body and the head of the instrument.

Abstract: A guitar synthesizer has a guitar body (10) and a synthesizer portion (20). The body (1) of the guitar extends toward a head (3) in a direction so that an end (11) serving as a first vibratory member in the body base to which a neck (2) is connected, intersects with the neck. A second end (13) serving as the second vibratory member may also intersect with the neck. A non-vibratory portion (12) is interposed between the first and the second vibratory members (11, 13). A reinforcing frame (4) is attached to the head and body to interconnect them with the shortest distance for providing a firm connection from the non-vibratory portion of the body to a part of the head closer to a nut (5) than to the head end. Thus, the connection between the head and the frame is located below the central point of the distance between the nut and the top end of the head. Such a structure suppresses vibrations of the neck and an early attenuation of the fundamental frequency due to the vibration of the strings (7), are avoided.