Soundtrack/OST of Mary stayed out all night “Mary, marry me“ (2010) In this drama , Suk became Kang Mu Gyul, his 6th musical character. KMK is the lead vocalist and guitarist for a rock band. He is chic and lives a carefree bohemian lifestyle. He doesn't talk much and only wants to make music. Mu-Gyul doesn't care about success. He also suffers trauma with his mother and, because of this, becomes tired of the women he dates and leaves them. Mu-Gyul is a bad guy to women. When it appears Mu-Gyul will never
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