MAMAMOO's Moon Byul and Gaho are the voices behind "Half of Half" for the 'Hanyang Diaries' OST.

The music video above features scenes from the popular webtoon 'Hanyang Diaries', which follows the owner of a trendy shop in the middle of Joseon's hottest new area. "Half of Half" is a medium tempo acoustic song about the close relationship between someone who could be a friend or a lover.

In other news, Moon Byul collaborated with Xydo for their track "Me Without You" this past August.

Listen to Moon Byul and Gaho's "Half of Half" above!