Saya mau tau Daftar Track dari Day by Day

In My Dream (featuring H.O.T)

I Don't Wanna Say Good-bye

내겐 너무 예쁜 그대 (Beautiful Girl)

사랑을 닮은 노래 (A Song for Love)

In My Dream (Extended Version)

Statistik diambil dari Music Industry Association of Korea.

Album Fly to the Sky

en:Day by Day (Fly to the Sky album)