Taeyong's self-composed song Blue
Lyrics Kor / Eng Trans
*do not take out
He mentioned he wrote it while he was feeling emotional, so PERSONAL GUESS that it's a song about finding comfort in someone you can show all your sides to, even the sides you're embarrassed of.

sowwee forgot one line!
"shake it all off and/ dive in the blue"

wanna add a note cuz I think he's a composing genius..
the rhymes in this verse *chef kiss* is why the song sticks in your ears well.
우린 들어가 움푹 (oom-pook)
그 아래 색 Blue (beul-loo)
그 안에 꽉찬 우주 (oo-joo)
날 찾아와줘 불쑥 (bool-sook)

I translated it so it would best make sense in an English sentence but here's a more detailed break down
들어가 움푹 = going in like a dimple/ imagine diving into a marshmallow or something squishy
찾아와줘 불쑥 = basically like find me whenever you want, without notice ;_;

also realized the last line could be 쏟아내 (pour it all out) instead of so dive in!! <3 hope he releases the song officially soon ;__;