The magnetic pickup positioning mechanism for electric musical instruments is mounted beneath the strings between the neck and bridge of an electric musical instrument like the electric guitar or bass. It includes a length of “C” profile track fastened to the guitar and one or more slide-swivel assemblies that twist-lock into, slide and rotate along the track. Magnetic pickups are mounted to the slide-swivel assemblies that allows the player to use their hand to slide and rotate the pickups to various positions and angles between the neck and bridge in order to get a wide variety of tones.