source:https://www.soompi.com/2017/06/18/lee-woo-jin-produce-101-season-2-make-guest-appearance-clons-upcoming-music-video/
Lee Woo Jin, the youngest contestant of “Produce 101 Season 2,” will be making a surprise appearance in Clon’s upcoming music video.
On June 18, Clon’s Koo Jun Yup posted a series of photos and videos on his Instagram account with the captions, “Our cute Woo Jin will be making a guest appearance in Clon’s music video. An uncle and nephew’s shuffle dance. Our lovely Woo Jin.”
Lee Woo Jin is currently under the same label, Media Line Entertainment, as Clon.
Clon will be releasing a new album on June 29 to celebrate their 20th anniversary. The duo will be dropping a pre-release track on June 20, and the song is set to feature singer Ailee.