Moon Myung Jin lent his voice in "Crying Again" for part six of the 'Heirs' OST!

SEE ALSO: [SPOILERS!] Heirs Ep. 10: Five Light Moments

"Crying Again" is a sorrowful ballad song composed, written, and arranged by Han Seung Hoon and centers around Kim Tan (Lee Min Ho) and Cha Eun Sang (Park Shin Hye)'s love story.

Listen to "Crying Again" to get your hearts ready for another intense episode of 'Heirs' later today!