The distinctive melodies that have long marked train departures across East Japan Railway Co.'s network are steadily falling silent, as the company accelerates a shift toward one-man operations and modernized equipment.For many passengers and communities, the change signals the fading of a small but cherished piece of railway culture.In the Tokyo metropolitan area, JR East's station departure melodies -- once triggered by conductors on the platform -- have been discontinued at a growing number of stations.The move is largely tied to the elimination of conductor roles under one-man operation…READ FULL ARTICLE