Singer Ailee will be working with Wheesung again and comeback this coming January.

Wheesung, who produced Ailee's "Heaven" in 2012, made her one of the top female singers to debut. They will be working together again for her comeback this January.

They will be releasing her new song, "Improved Song" on January 6, which was produced by Wheesung.

This song is a rock ball and and will match well with Ailee's talented voice.

Also, this is a comeback to watch out for as she will be making a comeback the same time top stars TVXQ and Rain will be coming back.

On the other hand, her teaser video for this song will be released on January 4.