• Lonely ft. Taeyeon (MV)
  

2016

• 한마디 (Your Voice) with Heritage -S.M. Station Season 1
  
• Inspiration -S.M. Station Season 1
  
• Oh Yeah by Uhm Jung-hwa             -The Cloud Dream of the Nine
  
• 한마디 (Your Voice) with Heritage; Prologue 
  
• 좋아 (She Is) 
  

2015

• 그 이름 (Named) with Taemin                            -Who Are You: School 2015 OST Part 6
  
• Beautiful Lady -Oh My Venus OST Part 1 
  
• 사랑해 이 말 밖엔 (Only The Words I Love You) -Two Yoo Project - Sugar Man OST Part 5
  
• 엘리베이터 (Elevator)                                           -Monthly Live Connection Track 1
  
• 가을이긴 한가 봐 (I Guess Now It's the Fall) with Go Young-bae -Monthly Live Connection Track 2
  
• 애월 (愛月) (Aewol) with Jung Joon-young        -Monthly Live Connection Track 3
  
• Crazy (Guilty Pleasure) ft. Iron (MV)
  
• 데자-부 (Déjà-Boo) ft. Zion. T                            -Showcase Single (MV)
  
• 할렐루야 (Hallelujah) (Dance Practice Version) (MV)
  
• 하루의 끝 (End of a Day) (MV)
  

2014

• She -Birth of a Beauty OST Part 1
  
• 숨소리 (Breath) with Taeyeon              -as part of S.M. The Ballad
  
• 하루 (A Day Without You) with Chen -as part of S.M. The Ballad
  

2013

• 우울시계 (A Gloomy Clock) by IU                  -Modern Times 
  
• 백분의 일 (1 Out of 100)                                 -The King's Dream OST Part 3
  
• You Are A Miracle (with various artists) -2013 SBS Gayo Daejun Friendship Project
  

2012

• Dear My Family (as part of SM Town) -I AM. OST
  

2011

• So Goodbye -City Hunter OST Part 2
  

2010

• 너무 그리워 (Miss You)                                -as part of S.M. The Ballad
  
• Hot Times (시험하지 말기)                          -as part of S.M. The Ballad
  
• Don't Lie with Jino featuring Henry         -as part of S.M. The Ballad 
  
• Let's Go -as part of G-20
  

2008

• 交错的爱 (Wrongly Given Love) by Zhang Liyin