In the olden days (1950s-60s) computers emitted significant RF noise that could be picked up on a nearby radio. Some computer operators (folks who tended them) learned to recognize the “melodies" produced by common workloads and could tell when things were going wrong.
assigning sounds or frequencies to different pieces of data on your computer so (if you listen closely) you can hear the texture of what your computer is crunching on at any given moment