可愛い歌 – IUとチョン・ソクソク (Beautiful Song – IU & Jo Jung Suk) [You’re The Best Lee Soon Shin Unofficial OST]
Title: Beautiful Song (綺麗な歌) Written by: IU (アイユ) Sung by: IU and Jo Jung Suk (アイユ&チョン・ソクソク) Ayame for Hangul and Romanization lyrics Fidelity for English translations
WACOCA JAPAN: People, Life, Style.