First Winter

First Winter - IU, Sung Si Kyung

First Winter (첫 겨울이니까) - IU, Sung Si Kyung(Hard Version)

First Winter (첫 겨울이니까) - IU, Sung Si Kyung(Easy Version)

First Winter (첫 겨울이니까) - SUNG SI KYUNG (성시경), IU (아이유)

First Winter 첫 겨울이니까 - IU, SeongSiKyung (아이유, 성시경)

First Winter (첫 겨울이니까) - SUNG SI KYUNG(성시경), IU(아이유)

First Winter - Sung Si Kyung, IU(original key)

첫 겨울이니까 - 성시경, 아이유