The shutdown jingle shipped with Windows XP, Microsoft's landmark operating system released in 2001, as part of its full set of system sounds for startup, shutdown, errors and notifications. While the famous startup theme was composed by Brian Eno, the shutdown chime became equally embedded in daily life through the decade XP dominated home and school computers. As the OS aged into a nostalgia icon, the sound resurfaced in memes, vaporwave tracks and YouTube outros, where it now signals endings, goodbyes and the fondly remembered era of chunky CRT monitors.