June is almost over but there is another release coming up, which will be from none other than singer-turned-actress, Nam Gyu Ri, who surprised fans by announcing the release of a digital single this week!

Nam Gyu Ri asked fans on Twitter, "Who! Do you think it is? If you know who it is....?", with goofy snapshots from the studio with a mysterious, bald-headed man. 

SEE ALSO: Nam Gyu Ri joins Namoo Actors + to seek revenge in new drama 'Heartless City' as her character

So take your best guess as to who this man might be while we await the new release from Nam Gyu Ri on the 28th! The singer and actress is also currently seeking revenge as the cold, undercover character, Yoon Soo Min, in the JTBC drama, 'Heartless City'.