Naul has dropped Taeyeon's music video teaser for "Nights Into Days".

In the sentimental MV teaser, a woman spends time alone by the water. "Nights Into Days" is the next release for the 'Ballad Pop City' project and features songs written and composed by ballad singer-songwriter Naul. The project previously featured Sung Si Kyung's "Love Sick".

Taeyeon's "Night Into Days" drops on February 2 KST. Check out the MV teaser above, and let us know what you think in the comments below.