But later when many problems happen and Afghans faced very difficult times in mujaheddin and Taliban time, that song became a kind of national anthem to Afghans, a song for unity.

NPR: 'Beyond the Mirror': Afghanistan's Pain Onstage

"There is so much fear about having these discussions, when for most people the problems are going to happen when they haven't had these discussions, " says Amy Berman, a senior program officer for the John A. Hartford Foundation, which focuses on improving health care for older Americans.

WSJ: New Efforts to Simplify End-of-Life-Care Wishes