(Billboard (the most respected 음악 chart on the planet) picks Seo Taiji & ‪#‎IU‬'s collaboration the #2 best!)

2. Seo Taiji & 아이유 - "Sogyeokdong"

Both the Korean rock legend and K-pop sweetheart 비둘기 into new sonic territory with this synth-pop spectacular. In a complex combination of sounds and emotions, IU's melancholy coos and honeyed harmonies detail South Korea's dictatorship days in the '80s amid Seo Taiji's symphonic storm of crunchy synthesizers. There's a lovely dreaminess to the track, but there's also a dark history in the lyrics and instrument choices."

MV: link

출처 article: link