IU said in its 10th anniversary Concert at the Singapore The Star Theater on the 15th, "It is a song that is not on the original list, but I will sing for someone who really misses it."
"Melencolia I Clock" is a song from IU's third album, "Modern Times", which is a song written and written by the late Jonghyun for IU and featured. IU, who was close to the deceased in his lifetime, missed the deceased by singing this song.
On the other hand, Jonghyun, who made his debut in the music industry as a group Shiny member, was active as a popular Idol and Singer Song Writer, but ended his life on December 18 last year.
About IU
Lee Ji-eun, also known by her stage name IU, is a South Korean singer-songwriter, record producer and actress. She signed with LOEN Entertainment in 2007 as a trainee and debuted as a singer at the age of fifteen with her first mini album Lost and Found.
 Wikipedia