EXO Chen and Baekhyun - Really I Didnt Know
EXO's Baekhyun, Xiumin and Chen - 너를 위해 (For You) [160825 'Scarlet Heart: Ryeo' OST]
EXO Chen and Baekhyun - Really I Didn't Know (Yim Hui Suk cover) [130817 Immortal Song 2]
EXO Chen and Baekhyun - Really I Didn't Know (Yim Hui Suk cover) [130817 Immortal Song 2]
EXO (Baekhyun and Chen) - Really I Didn't Know @Immortal Song 2
EXO (Baekhyun and Chen) - Really I Didn't Know @Immortal Song 2
EXO's Baekhyun, Xiumin and Chen - 너를 위해 (For You) [160824 'Scarlet Heart: Ryeo' OST]
EXO's Baekhyun, Xiumin and Chen - For you [Lovers of the Moon OST]