Abstract: A new and improved guitar neck apparatus is provided that includes a plurality of convexly curved fret portions and a convexly curved first guitar neck portion underlying and supporting the convexly curved fret portions. The convexly curved first guitar neck portion extends between the guitar body portion and the string-tension-adjusting portion. The convexly curved first guitar neck portion includes a concavely shaped underside portion. A tongue portion extends radially from the concavely shaped underside portion. The tongue portion divides the concavely shaped underside portion into two symmetrical concavely shaped groove portions suitable for receipt of one or more fingers of a guitar player. A reinforcement member is located in the tongue portion of the apparatus and extends from the guitar body portion to the string-tension-adjusting portion. An adjustable balancing assembly is provided that fits onto the guitar neck apparatus.