Yay, rejoice because the OST for 'Scarlet Heart: Ryeo' sung by EXO's Chen, Baekhyun, and Xiumin is out!

The song is a beautiful, melodic track - almost reminiscent of an older Japanese track by BoA or perhaps an ending song for 'Inuyasha.'  It's very nice and easy on the ears, especially with their rhythmic, "dda dda ras" - you can expect a killer OST for the whole drama from this track already!