Abstract: The pitch changer is mounted in a cavity in the backside of a Spanish Guitar and incorporates a bell-crank lever of which one end protrudes out of cavity through a hole in cover and lays parallel along the backside of the guitar, with its strap attach end pointing towards the neck. This lever when pulled by the guitarist, which is attached to his belt by some sort of strap, engages other levers which have the guitar strings attached, thus stretching them to a higher pitch, one-half or full step, against a recessed step in guitar body. This is accomplished by a linkage system of rocker plates and wires which is connected between the two lever systems. Adjustable stop means are provided to limit the movement of the levers which have the strings attached, thus enabling the control of the high and low pitch. The tension of the guitar strings pulls levers back to their low positions when bell-crank lever is released by guitarist.