The startup sound comes from Sony's original PlayStation, first released in Japan in 1994 and in North America and Europe the following year. The boot sequence played every time the console was switched on, so for millions of players it became inseparable from the start of a gaming session. As those players began making videos, the sound moved from living rooms to YouTube edits, streams and memes, where it now works as instant shorthand for retro gaming and childhood nostalgia.