Singer/song-writer Kim Jae Hwan has released a moody, 2nd concept film and photo for his 4th solo mini album, 'The Letter'. 

Judging by the singer's concept teasers so far, the combination of serene piano music, color to black and white effects, and the singer's own pensive expression hints at an emotional comeback album, perfect for the winter season. Kim Jae Hwan's 4th mini album 'The Letter' is set for release this coming December 27 at 6 PM KST.

Ahead of his solo artist comeback, Kim Jae Hwan is also slated to perform as a part of Wanna One during the '2021 Mnet Asian Music Awards', taking place this weekend on December 11.