Abstract: A sound control apparatus and system for use with an electric guitar having a body, strings extending over a portion of a front face of the body and arranged to be engaged by fingers on the playing hand of the guitarist to vibrate the strings to produce sound, the guitar further having an electrical device for controlling a quality of the sound heard as a result of playing the strings, comprising a control device adapted to couple with the electrical device in close proximity to the strings such that a portion of the control device is adjacent the strings and a portion of the control device is distant the strings, the control device is further adapted to be rotatably controlled by the guitarist fingers for effectuating a quality of the sound, whereby the guitarist controls the sound quality with a hand employed to vibrate the strings, and further comprising a restricting device coupled with the control device and cooperable therewith for preventing rotation of the control device from pressure applied from the