A multitrack is a type of audio recording that involves capturing multiple individual audio tracks separately. These are combined during mixing. Each track can represent a different sound source, such as vocals, instruments, or effects, recorded in isolation. This method allows for full control during the mixing process because each track can be edited, balanced, and processed independently before they are combined into a final mix (stereo audio file).
Multitracks are commonly used in music production, film, and broadcasting. For example, in music production for a song, separate tracks might be used for vocals, guitars, bass, drums, and other instruments. Each of these tracks can be recorded separately and then mixed together to create the final version of the song.