LINE is a messaging app launched in Japan in 2011 that grew into one of the most widely used communication platforms in Japan, Thailand and Taiwan, where its built-in ringtones became instantly recognisable to millions of daily users. The xylophone version stands out among its default tones for its light, musical feel, which made it a popular choice for calls rather than a sharper electronic beep. Online, creators reuse the short clip to signal a message or call in edits, memes and reaction videos, keeping it familiar even to viewers who do not use the app themselves.