This is a great column in the Asahi on Page 1, no less:

VOX POPULI: An old song rings in my ears, filled with grief of Korea’s division

The song was titled “Namida ni Nureta Tomanko” (Tear-stained Tumen River)—a sorrowful ballad born during Japan’s colonial rule over Korea (1910-1945). It speaks of longing for a loved one separated by fate.