2014.10.02 Billboard
https://www.billboard.com/articles/columns/k-town/6273846/k-pop-seo-taiji-iu-sogyeokdong
K-Pop Legend Seo Taiji Enlists IU for Synth Spectacular 'Sogyeokdong' | Billboard
Legendary K-pop singer/composer Seo Taiji teases his first album in five years 'Quiet Night' with the gorgeous collaboration track "Sogyeokdong" featuring IU.
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