2AM's Changmin will be revealed his self-composed song "Not a Bad Guy" (tentative translation) at 2AM's solo concert this December.

Changmin wrote on his SNS on the 13th, "This concert's solo stage will feature the unreleased song 'Not a Bad Guy,' which was written by me and isn't included in the album. Since it's the first time I'm revealing the song at the concert, I put a lot into it and hope you look forward to the song."

This new song was written and composed by Changmin, and composer Jerry.L helped arrange the song. The song is not included in 2AM's new album Nocturne, which is scheduled for release on the 19th. It will be heard first at the concert.

Changmin said, "Up until now, the solo stage at concerts featured my favorite artist's songs. However this year I wanted to showcase not another artist's song but a song of my own. I've worked on creating this song in my spare time, and this song matches with the type of music I like. I thought it was a good choice for the audience to enjoy, which is why I chose it."

"Not a Bad Guy" is an upbeat electronic piano and funky guitar sound song, and is to be appreciated for being different from 2AM's usual ballad and lyrical music.

2AM will be holding their 'Nocturne Concert' on December 7th and 8th at the SK Olympic Handball Arena at the Seoul Olympic Park. After their concert in Seoul, they will have a concert in Los Angeles on the 15th and in Taipei, Thailand on the 21st.