The Big Sur startup chime is associated with macOS Big Sur and modern Mac boot behavior from Apple's early 2020s software era. Online, it spread beyond regular computer use because creators recognized it as a sleek, instantly readable startup cue. People use it to represent turning something on, beginning a process, or reviving a dead project. It also sits alongside other nostalgic computer sounds, including Windows XP error music, because both clips quickly signal a specific era of personal computing.