Abstract: A tremolo device for a stringed instrument is described in which a base plate is configured for surface mounting to a body of the instrument. A pivot plate is pivotally coupled to the base plate along an edge of the pivot plate. Each string is associated with a string seat. The string is threaded through the string seat receiving a terminal end of the string. The string seat includes a keyed portion that slidably attaches the string seat to the pivot plate in a keyed slot provided in a bottom surface of the pivot plate. A spring disposed between the base plate and the pivot plate maintains the pivot plate in a first position relative to the base plate until a user provides an action to pivot the pivot plate relative to said base plate. The spring returns the pivot plate to the first position when the user action is terminated.