Lyrics for this song have yet to be released
Y (Why...) (Inst.) was written by Fuxxy & Javier Solís & Brandon Fraley & 황성제 (Hwang Sung Jae).
Y (Why...) (Inst.) was produced by 이수만 (Lee Soo Man) & KENZIE (KOR).
Zhang Liyin released Y (Why...) (Inst.) on Fri Sep 08 2006.