The song, “Written and Erased” is a collaboration between Goo Hye Sun and The Blind, a visually impaired group, released on March 2 by YG Entertainment.

The song is about a blind man writing a letter to a girl in an attempt to confess his love. He repeatedly wrote and erased his message multiple times as he tries to write a perfect letter. The sound of a braille typewriter is featured in the background of the song, which added an extra, unique rhythm.