SONAMOO have been keeping their comeback concept a�mystery with their 'Green Moon' teaser image, and now they're here to add more to the confusion with additional images! But at least we now know that their new title track is called, "Cushion"!

As mentioned in an earlier report,�the new song has been co-produced by�EastWest�who is one of the new producers under�Duble Sidekick, and�uNo�who is actually former�SPEED�member and�Zico's brother,�Taewoon! So you know it'll be good!

The upcoming album is definitely one to look out for as members D.ana and Newsun both took part in writing the lyrics for some of the songs!

SEE ALSO: Hyeri takes the lead in female popularity vote at the Baeksang Arts Awards

In addition, member Nahyun recently uploaded the image you see below on her Twitter, asking if you can guess who the member is in the picture. Who do you think it is?