A song, titled "Zhuravli" ("crane"), by a Russian singer Joseph Kobzon was featured in the series. Although many Koreans did not understand the lyrics, it is still one of the most widely recognized song in Korea thanks to the show's popularity. The song actually mourns the Soviet soldiers killed while defending their homeland and who later became cranes. The lyrics blend well with the theme of the show since one of the major plot devices of the show, the Gwangju Massacre, commemorates the dead who were caught in the middle of the tragedy.