Relative harmonic dynamic pitch control device and system

Abstract

In some aspects, a tremolo for a stringed-instrument includes a tremolo frame and tremolo cams including a laterally spaced-apart curved string contact surfaces at positions and spacings corresponding to string positions of strings for a stringed instrument. The tremolo lever is rotatably mounted to the tremolo frame to rotate about an axis of rotation, an upper portion of the tremolo lever adjacent the tremolo frame and a lower portion extending downwardly from the upper portion, the lower portion including, at or near a distal portion thereof, one or more string retention structures configured to secure string end portions. The upper portion of the tremolo lever includes a first mechanical connector to receive a mating second mechanical connector at a first end portion of an outer lever arm so that forces applied to the outer lever arm by a user to rotate the tremolo lever about the axis of rotation in a first direction of rotation displace the distal portion of the tremolo lever in a first direction to increase a tension in, and a pitch of, strings secured at the distal portion of the tremolo lever and forces applied to the outer lever arm to rotate the tremolo lever about the axis of rotation in a second direction of rotation displace the distal portion of the tremolo lever in a second direction to decrease a tension in, and a pitch of, strings secured at the distal portion of the tremolo lever.