Also known as "double$-$tracking" or "multi$-$tracking," a mtehod used in sound recording that allows for several different parts to be recorded separately and then layered over one another in playback.

An electronic instrument, usually incorporating a keyboard, capable of producing complex sounds through the manipulation of wave shapes

A device used for a recording process wherein a sound source is recorded with a microphone, converted into a stream of binary numbers taht represent the profile of the sound, quantized, and stored in computer memory. The digitized sound may be retrieved in any number of ways, including "virtual recording studio" programsfor the computer, or by activating the sound from an electronic kevboard