2007 - Japanese Debut

Surgeon Bong Dal Hee OST - Theme/Insert Song - Group - February 13, 2007

1. 어린날의 기억 [Memories of Childhood]
2. 지울 수 없는 사랑 [Love That Cannot Be Erased]

Kungya Kungya OST - Theme/Insert Song - Group - April 24, 2007

1. Fly Away
2. Fly Away (Go Go Remix)

Kokoro - Japanese Single 1 - Group - August 1, 2007

1. Kokoro [Heart]
2. Be A Star
3. Alice
4. Kokoro (instrumental)
5. Be A Star (instrumental)
6. Alice (instrumental)

Kokoro (Limited Editions) - Japanese Single 1 (Special Release) - Group+Solo - August 1, 2007

1. Kokoro
2. Be A Star
3. a. Rize Up - Hyun Joong
b. Hajimete Miru Sora Datta [First Time Seeing the Sky] - Young Saeng
c. Hikari [Light] - Kyu Jong
d. Here - Jung Min
e. Sayonara ga Dekinai [Impossible Goodbye] - Hyung Jun
4. Kokoro (instrumental)
5. Be A Star (instrumental)
6. a. Rize Up (instrumental)
b. Hajimete Miru Sora Datta (instrumental)
c. Hikari (instrumental)
d. Here (instrumental)
e. Sayonara ga Dekinai (instrumental)

Distance ~Kimi to no Kyori - Japanese Single 2 - Group - September 19, 2007

1. Distance ~Kimi to no Kyori
2. Gleaming Star
3. Wonderful World
4. Distance (instrumental)
5. Gleaming Star (instrumental)
6. Wonderful World (instrumental)

Distance ~Kimi to no Kyori (Limited 1st Press) - Japanese Single 2 (Special Release) - Group - September 19, 2007

1. Distance ~Kimi to no Kyori
2. Gleaming Star
3. Yowamushi ~ Okubyou na Boku [Coward] (Japanese version)
4. Distance (instrumental)
5. Gleaming Star (instrumental)
6. Yowamushi (instrumental)

SS501 - Japanese Album 1 - Group - October 10, 2007

1. Live!
2. Distance ~Kimi to no Kyori
3. 4Chance (Watch Game) (Japanese version)
4. Honto ni Sukidatta [Really Like You]
5. No Exit Days
6. Again (Japanese version)
7. Boundless
8. Butterfly
9. Always and Forever
10. Sunset
11. Kokoro