Wonho's latest comeback is coming up fast!

On September 6 KST, the solo artist unveiled the tracklist for his 2nd mini album 'Blue Letter.' According to the tracklist, the new album will feature seven songs in total, including a Korean and English version of title song "Blue." The tracklist also reveals that Wonho participated in lyric writing, composing, and arranging every track on the album except opening track "Intro: Seasons and Patterns."

Meanwhile, 'Blue Letter' is set for release on September 14.

Check out the full tracklist below!