I Hear Your Voice OST Part 1 [너의 목소리가 들려 OST Part.1]
Artist: Every Single Day [에브리 싱글 데이]
Release Date: 13 June 2013 (Melon)
Track Listing:
1. Dolphins
2. Echo [Title Track]
3. Dolphins (Inst.)
4. Echo (Inst.)
I Hear Your Voice OST Part 2
Artist: Jung Yeop [정엽]
Release Date: 17 June 2013 (Melon)
Track Listing:
1. Why Did You Come Now
2. Why Did You Come Now (Inst)
I Hear Your Voice OST Part 3
Artist: Kim Yeon Ji, Narae [김연지, 나래]
Release Date: 1 July 2013 (Melon)
Track Listing:
1. In My Eyes
2. The Days We Were Happy
I Hear Your Voice OST Part 4
Artist: Shin Seung Hoon [신승훈]
Release Date: 9 July 2013 (Melon)
Track Listing:
1. Words You Can't Hear
2. Words You Can't Hear [Inst.]
I Hear Your Voice OST Part 5
Artist: Melody Day [멜로디데이]
Release Date: 16 July 2013 (Melon)
Track Listing:
1. Sweetly Lalala
2. Sweetly Lalala [Inst]
