John played All For You by Lee Jae-hoon, Cha Hyun-ok, and Kim Sung-soo, who are from the band "Cool" which debuted in 1994. This piece is used in the 2012 South Korean television series known as "Reply 1997" that centers on the lives of six friends in Busan who relive their memories of their school days. John plays like no other Pianover. He puts on his earphones and watches a music video playing on his mobile phone before him. As he listens to the music, he plays the same tune on the piano. Effectively, John plays off the music video rather than a music score! This brings “play by ear” to a whole new level!