《아무도 모르게（Nobody Knows）》以原声吉他声为中心，添加了现代节奏和电影感的声音，是一首表现了凄凉又充满紧张感的歌曲，将电视剧搞笑部分背后的神秘感变得更加突出。在《The Voice of Korea》、《Superband 2》等节目里以爆发性的唱功，和特有的音色受到称赞的金艺智，以充满力量又细腻的主唱进一步强调了中的紧张感，并提高了歌曲的完成度。[Credits]Lyrics by 김현아Composed by 박태진 (Bluewall)Arranged by 박태진 (Bluewall)Guitar, Bass, Drum, Synth by 박태진Chorus by 김예지Recorded by 김희재 @ CS MUSIC& StudiosMixed by 고현정 @ koko SoundMastered by 도정회, 박준 @ SoundMAXOST Producer 김정하, 이다임, 윤민아