Jellyfish Entertainment is asking fans to throw in their best guess about which member of VIXX will be singing a duet with Lyn for the next installment of the 'Y.BIRD from Jellyfish Island' project series.

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VIXX's agency Jellyfish Entertainment asked, 'LYN X Who?', through a teaser image unveiled on their homepage on the 28th and gave more clues through another teaser image which reads, 'LYN X Who? of VIXX,' on the 30th.

The agency stated, "We are preparing a new project [single] that is different from those of the musicians released up until now... It will be above fans' imagination so we ask for a lot of interest."

Jellyfish Entertainment producer Hwang Se Jun's 'Y.BIRD From Jellyfish Island' project series never failed to give listeners great ear candy with digital singles from their artists Seo In Guk, Lee Seok Hoon, VIXX, and more in the past, so expectations are high for this new release!

Any guesses as to who this mystery member may be?