EXO Baekhyun ft. Chen (백현 & 첸) - Really I Didn't Know (진정 난 몰랐네)
CHEN & BAEKHYUN [EXO] - Laundry
Chen & Baekhyun [exo] - Really I Don’t Know
Baekhyun & Chen [EXO] - Really I Didn't Know
EXO (Chen & Baekhyun) - Really I Didn't Know (Yim Hui Suk cover)
EXO (엑소) (Chen & Baekhyun) - Really I Didn't Know (Cover)
EXO (엑소) (Chen & Kyungsoo & Baekhyun) - December 2014
Baekhyun & Chen (백현 & 첸 of EXO) - 진정 난 몰랐네 (I Really Didn't Know) (130817 KBS Immortal Song 2)
EXO (D.O, Baekhyun, Luhan & Chen) - Open Arms
EXO - Really I Don’t Know @Immortal Song 2 (Chen & Baekhyun)
EXO (Baekhyun & Chen) - Just Once (130620 Arirang Radio SoundK)
EXO Baekhyun & Chen - Just Once
BaekHyun [백현] & D.O. [디오] & LuHan [루한] & Chen [첸] (EXO) - Open Arms