2008 - Return & Sub-Unit

Deja Vu - Single 3 - Group - March 11, 2008

1. Deja Vu
2. 널부르는 노래 [A Song Calling For You]
3. Destiny

A Song Calling For You (Remix) - Digital Single - Group - April 18, 2008

1. A Song Calling For You (Remix)
2. A Song Calling For You (Remix) (instrumental)

SBS TV Hope Song - Collaboration - Group - April 18, 2008

1. 손을 잡아요 [Holding Hands] - Girls' Generation (Tiffany, Jessica), Super Junior (Leeteuk, Eunhyuk, Sungmin, Yesung), Brown Eyed Girls, SS501, Jewelry, Lee Hyun, T.G.U.S

Singles - Japanese Release - Group - May 21, 2008

1. Warning
2. Passion
3. Never Again
4. Take U High
5. Everything
6. White Person
7. My Girl
8. Snow Prince
9. In Your Smile
10. Fighter

MBC Music Core Help Song - Music Show Special - Group - May 31, 2008

1. 1388 Help Song

Lucky Days - Japanese Single 3 - Group - June 18, 2008

1. Lucky Days
2. Summer Blue
3. Hoshizora [Starry Sky]
4. Lucky Days (instrumental)
5. Summer Blue (instrumental)
6. Hoshizora (instrumental)

Lucky Days (1st Press Limited Edition B) - Japanese Single 3 (Special Release) - Group - June 18, 2008

1. Lucky Days
2. Summer Blue
3. Kimi wo Utau Uta [Song For You] (Japanese version)
4. Lucky Days (instrumental)
5. Summer Blue (instrumental)
6. Kimi wo Utau Uta (instrumental)

You Are My Heaven - Digital Single - Group - June 27, 2008

1. 넌나의천국 [You Are My Heaven]
2. You Are My Heaven (instrumental)

Thank You - Digital Single - Solo - July 4, 2008

1. 고맙다 [Thank You] - Hyun Joong
2. Thank You (instrumental)

Strongest Chil-Woo OST - Theme/Insert Song - Group - July 7, 2008

1. 우리 함께라면 [If We Are Together]

Find - Mini Album 1 - Group+Solo - July 28, 2008

1. 너와 숨쉬다 [Breathing For You]
2. You Are My Heaven
3. Find
4. Thank You - Hyun Joong
5. You Are My Heaven (instrumental)
6. Find (instrumental)
7. 사랑해X5 [I Love You x 5]
8. Thank You (Acoustic version) - Hyun Joong

Page 198 of That Man's Book OST - Theme/Insert Song+Digital Single - Group - October 7, 2008

1. 바라보며 [Gaze] (Original version) - SS501
2. Gaze (Violin version)
3. Gaze (Guitar version)

U R Man - Mini Album 2 - Sub-Unit+Solo - November 21, 2008

1. Want It - *Trio Sub-Unit {lyrics by HJB}
2. U R Man - Trio Sub-Unit
3. The One - Trio Sub-Unit {lyrics by HJB}
4. 사랑인거죠 [Is It Love] - Young Saeng {lyrics by YS}
5. Never Let You Go - Kyu Jong
6. I Am - Hyung Jun {lyrics by HJB}
   *Trio = Young Saeng, Kyu Jong, & Hyung Jun