pick up An electric guitar or is a type of that uses several pick-ups to convert the sound vibrations from strings into an current which will be amplified again using set amplifiers and loudspeakers. The produced by vibration hitting coil in body usually called . Sometimes signal coming out pick-up changed electronically through effects with additional reverb distortion. first guitars were used jazz players who hollow bodied get louder sound. was steel made manufacturer Rickenbacker 1931. key instrument development music emerged since 1940 including Chicago Blues rock roll blues rock.