Sung Si Kyung sings 'Somewhere Someday' for 'The Legend of the Blue Sea' OST Part 5
Sung Si Kyung lent his soothing voice for 'The Legend of the Blue Sea' OST Part 5.
The ballad king's new OST is called "Somewhere Someday", and is a soft, melodic track suited forLee Min HoandJun Ji Hyun's romance in the trending drama.