The sound comes from the SNCF, the French national railway company, whose short melodic logo has played before station and on board announcements since 2005. Created as a recognisable audio signature, its four rising notes became familiar to millions of passengers travelling in France. Online editors later remixed that cue in many styles, and this version gives it a Brazilian rhythm treatment. The remix spread on soundboards and short video apps because the contrast between a formal transport jingle and a party beat is instantly understandable, even for listeners who have never taken a French train.