Lyrics for this song have yet to be released
いつかきっと… (Itsuka kitto…) [Instrumental] was written by EXILE ATSUSHI.
いつかきっと… (Itsuka kitto…) [Instrumental] was produced by Matthew Tishler & Andrew Ang.
EXILE (JPN) released いつかきっと… (Itsuka kitto…) [Instrumental] on Wed Sep 14 2011.