This sound is a user-made meme edit rather than a line from a film or television show, created by applying pitch correction to a baby's cry until it sounds like singing. Clips like this spread through soundboards and short-form video, where creators reuse the same few seconds as a reusable reaction for failure and exaggeration. Its appeal has lasted because the effect is instantly recognisable, easy to drop into almost any edit, and funny precisely because a distressed sound has been turned into something tuneful and absurd.