It was revealed recently that Mystic89's solo artist Park Ji Yoon would be joining the line of February comebacks with her single 'Inner Space.'

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Today, she released the second teaser image as well as the track list. �In the image, she is wearing an elegant and feathery white one-piece for a very feminine and lovely look. �Meanwhile, the track list revealed that there will be two songs, "Beep" and the pre-release track "Brain Structure."� Both were composed by Postino and written by the collaborative efforts of Park Ji Yoon herself and Yoon Jong Shin. �

The MV for "Brain Structure" will be released tomorrow morning while the whole single album will be released on the 17!