An electronic tremolo producing apparatus for stringed electronic musical instrument is provided. The tremolo apparatus includes an electronic base unit mounted on the instrument with an attached tremolo arm. The base unit and the tremolo arm are designed to be mounted at the location similar to mechanical tremolos and are operated in the same manner; however the pitch of the instrument is changed electronically. The tremolo arm moves similar to regular mechanical tremolos from the first position the second position to decrease the pitch of the instrument that is achieved electronically without decreasing the tension of the plurality of strings; the arm moves from the first position to the third position to electronically increase the pith of the instrument without increasing the tension of the plurality of strings. The base unit and the tremolo arm can be removed from the instrument and used with another one.