DSB is Denmark's national train operator, and meddelelselyd is Danish for announcement sound, the chime played across its network before information messages. The tone has been part of everyday travel in Denmark for years, heard in InterCity trains and at stations from Copenhagen to Jutland. As clips of Danish rail journeys spread on video platforms, the chime was isolated and shared as a standalone effect. It is now used far beyond rail fans, as a recognisable cue for announcements, travel memes and Denmark-themed edits.