在韓미국인 Michael Aronson씨가, 서울메트로의 환승 안내 음악으로 만들었다고 하네요.
「I"ve been all around the world and ridden many a subway train
But only one"s so near-perfect, I can hardly complain
It"s not in New York, or London, or Tokyo, hardly miss them,
It"s the Seoul Metropolitan Subway System!」