track
n.
The path on which information is recorded.
A discrete segment of content in a sound recording; a cut; a band.
Notes
In phonograph records, the track1 is a continuous spiral groove cut in the disk, and different tracks2 are typically separated by a thin, visually distinct area. In compact discs, the track1 is laid out in a continuous spiral. In magnetic tape, several tracks1 are often laid down parallel to the length of the tape; they may be read or written simultaneously (parallel recording), one after another (serial recording), or in alternate directions (serpentine recording). Some magnetic tape formats use a helical scan with tracks1 running diagonal to the length of the tape.
