The chime is associated with Mac OS X, Apple's operating system for Mac computers released in 2001 as the successor to the classic Mac OS. Startup sounds had been part of the Mac experience since the 1980s, changing across hardware generations, and the OS X era tone became one of the most recognised versions. As clips, tutorials and retrospectives moved online, the sound spread beyond actual boot-ups, reused in videos and soundboards as shorthand for an Apple computer starting, an idea arriving, or a system coming back to life.