BTOB's Eunkwang, Hyunsik, and Sungjae gave a preview to their 'Fight My Way' OST.
The trio will be singing "Ambiguous" for the drama. Changsub, the other vocal line member, was unable to participate in this OST due to his Japanese schedules. Viewers heard a bit of the OST on the episode of 'Fight My Way' on June 5, and the full OST will be released online on June 12.
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Check out the making-of clip below.