Systems are shown herein for use in stringed musical instruments for producing digital frequency and volume data. A finger contact sensor system detects the location of one or more fingers or objects at selected locations on a finger board of the instrument. Further string movement sensor systems determine if one or more strings are being played. A control system processes information from the finger contacting and string movement sensor systems to generate a digital signal containing the frequency data corresponding to the finger contacting point on the finger board and volume data corresponding to the sensed movement of a corresponding string.