B2ST dropped the first video teaser for member, Yoseob!  

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The video is incredibly dramatic with the use of dark lighting and rough violins in the background as Yoseob watches a woman walk away from him and Junhyung sits by the piano.  In the end, his soothing and echoing voice asks her not to leave him behind.

Their music, including title track "Good Luck," will be released on June 16!  There are just a few days left, so look forward to the other members' teasers in the meantime.