“Blue & Grey” is a guitar ballad that tells the story an artist’s burn-out.

As V explained, blue is universally symbolic of sadness, while grey is a color that RM often references in his songwriting to convey the same, so V was inspired to use them both to describe that feeling.

“Blue & Grey” was originally intended to be on V’s mixtape and was entirely in English. The group, however, liked it so much that they decided to work it into the album BE. The snippet of the original version can be heard in episode five of BTS' show, In The SOOP.