A guitar, comprising: a guitar body having a guitar top , and a bottom board ; a neck support-fingerboard brace unit comprising a neck support and a fingerboard brace , wherein the neck support comprises: a top or upper portion having a front surface and a first and a second side , a lower portion having a bottom surface and a heel surface configured to connect to the heel of the neck, wherein the fingerboard brace extends from the front surface , wherein the top portion of the neck support and the fingerboard brace form a top surface of the neck support-fingerboard brace unit , wherein the guitar top is attached to the top surface of the neck support-fingerboard brace unit , and the bottom surface is attached to the bottom board , a guitar neck attached to the guitar body at the neck support , wherein each side of the top portion is formed at an angle relative to a longitudinal axis of the guitar body , and wherein the first and second sides of the top portion are curved sides intersecting with wood grains of the guitar top to avoid splitting the guitar top along the wood grain, the guitar being characterized in that the first and second sides are a curve expanding outwardly from the heel surface , or a wave. a guitar body having a guitar top , and a bottom board ; a neck support-fingerboard brace unit comprising a neck support and a fingerboard brace , wherein the neck support comprises: a top or upper portion having a front surface and a first and a second side , a lower portion having a bottom surface and a heel surface configured to connect to the heel of the neck, wherein the fingerboard brace extends from the front surface , a top or upper portion having a front surface and a first and a second side , a lower portion having a bottom surface and a heel surface configured to connect to the heel of the neck, wherein the fingerboard brace extends from the front surface , wherein the top portion of the neck support and the fingerboard brace form a top surface of the neck support-fingerboard brace unit , wherein the guitar top is attached to the top surface of the neck support-fingerboard brace unit , and the bottom surface is attached to the bottom board , a guitar neck attached to the guitar body at the neck support , wherein each side of the top portion is formed at an angle relative to a longitudinal axis of the guitar body , and wherein the first and second sides of the top portion are curved sides intersecting with wood grains of the guitar top to avoid splitting the guitar top along the wood grain, wherein the guitar top is attached to the top surface of the neck support-fingerboard brace unit , and the bottom surface is attached to the bottom board , a guitar neck attached to the guitar body at the neck support , wherein each side of the top portion is formed at an angle relative to a longitudinal axis of the guitar body , and wherein the first and second sides of the top portion are curved sides intersecting with wood grains of the guitar top to avoid splitting the guitar top along the wood grain, the guitar being characterized in that the first and second sides are a curve expanding outwardly from the heel surface , or a wave. <EOS>