Baek Ah Yeon revealed the physical copy of her upcoming 5th mini-album, 'Observe,' and continues to prepare for her comeback.

The solo singer has been releasing teaser photos and teaser clips ahead of the release of her album. Just a day before, she released a highlight medley giving a preview of all the tracks to her fifth mini-album. The album includes five tracks, including her title track "0%."

Then on September 3 at midnight, Baek Ah Yeon sat down in front of the camera to unwrap her physical album. She showed the composition of her new mini-album and shared some of the behind-the-scenes stories of the album production.

Baek Ah Yeon has been releasing teasers since last week and will be releasing her mini-album on September 7 KST. So stay tuned for just a few more days for the release of her mini-album.