Abstract: A stringed instrument which in one embodiment has a sounding board or box to which stretched strings are attached and which has a tremolo apparatus with a lever arm extending from a housing, the lever arm connected to one or more strings of the instrument, the lever arm movably secured to a shaft movably mounted in an interior opening in a wall in the housing, the shaft biased by a spring or springs and having stop means thereon so that, upon either extension or compression of the spring or springs when the lever arm is moved, the shaft returns to substantially the same position it maintained prior to spring movement so that the pre-tremolo tension and pitch of the string or strings attached to the lever arm is substantially the same post-tremolo. A tremolo apparatus as described above.