Taeyeon posted a picture of a recent photo taken on his instagram on the afternoon of the 20th. In the photo, Taeyeon caught the eye by taking a free pose, staring at the Camera with a faint eye in the background of a Dreamy feeling.
On the other hand, Taeyeon announced the single "I Didn't Know" on the 5th with Girls' Generation's new unit Girls' Generation - Oh! GG.