Sung-bong Choi performs on "Korea's Got Talent"

YouTube link. 

Before you watch this, think about what your life was like during the years between your 5th and 15th birthday.

The piece he is singing is an Italian song - "Nella Fantasia" ("In My Fantasy") with music by Ennio Morricone.  You can read more about the young man here.

Keep a box of tissues handy; there's a reason this video has almost 10 million hits.