2016年秋季发行的《关键先生》是吉恩京的首张单曲,专辑以管乐器,吉他,旋律等多彩的演奏曲和萨克斯管演奏。 从这张专辑开始,计划从今年开始发行本人的唱片。 ■ 크레딧 Executive produced by 버튼 뮤직 Produced by 길은경, 장효석, 양광호(FM43) Lyrics by 길은경 Composed by 길은경 Arranged by 길은경, 장효석, 양광호 Mixed by 양광호 at Button studio Mastered by 양광호 at Button studio Design & Artwork 박찬우