Kim Jang Hoon guest starred on KBS's 'Win Win' and opened up about his past and his reasons for only wearing long sleeves.

Kim Jang Hoon stated, "I tried to cut my finger for sound. When I was young, my obsession with sound was so great, I caused self-injury. The reason I only wear long sleeves is because though they have faded I have scars left on my arms."

He continued on, "When I couldn't hit a high note I would become very annoyed. But when I hurt myself I could hit those high notes. At that time, I thought 'I would sell my soul to be able to make that sound'. So, I once tried to cut my finger off. I understand van Gogh's reason for cutting off his own ear."

Following his shocking confession, the singer stated, "Sometimes people ask why I scream like that. Even now, I think I am creating sounds rather than singing. Though I sing for people, I also sing for myself, for me to live".