ZE:A's Siwan will sing the theme some of his character for tvN's 'Misaeng'.

On December 17th, ZE:A revealed through official SNS a photo of Siwan in a recording studio with the announcement of his upcoming OST for 'Misaeng'. It was revealed that Siwan directly participate in the composing and lyrics writing of the song, making it even more meaningful.

The song is titled 'But..So..' which is described as a 'Jang Geu Rae's Andante for Jang Geu Rae'. It will be released at noon on December 12th.