30-Day Asian Drama Challenge Day 20: Your Favorite Drama OST (Instrumental)?

So I had a hard time picking a drama’s OST because I usually remember song lyrics as oppose to just the music.

The one instrumental song I love, though, is The Heirs‘ “Moment.” I don’t like the lyrics to the song which is sung by Changmin from 2AM, but I do love the music to it. This would be the song if I walked down the aisle. It has this epic and magical nuance to it.