The two ballad artists will be taking part in a song called 'Perfume', which is of course by Duble Sidekick. While K.Will sings, Lee Seung Gi, as a singer-turned-actor, will star in the music video as the male lead to convey the emotions of the song.

The teaser also hints that besides K.Will, another artist will be joining him to sing the song, but we can only guess at who it might be for now.

THe release will be on the 17th, so stay tuned for another great song coming up this winter!