Lovelyz' Kei will be having a special collaboration with someone!
She's released a pink teaser video for "Y", and at the end we get a hint that it's not a solo release but a collaboration between Kei and a so far unknown person. In the teaser, we get only Kei's beautiful voice.
SEE ALSO: Lovelyz suit up on 'Immortal Song'
Who do you think the other person could be? Check out the teaser above!