Hiroki Takahashi

- U&I (Two Parts Chorus)
- 7, Shogakusei No Tame No Kokoro No Harmony Best! -Kizuna No Uta- · 2004
- With You Smile (Two Parts Chorus)
- 7, Shogakusei No Tame No Kokoro No Harmony Best! -Kizuna No Uta- · 2004
- Anata Ni Arigato (Two Part Chorus)
- 4, Shogakusei No Tame No Kokoro No Harmony Best! - Nibun No Ichi Seijinshiki No Uta/Kansha No Uta- 4 · 2004
- Yale!! (Two Parts Chorus)
- 3, Shogakusei No Tame No Kokoro No Harmony Best! -Ongaku Shukai/Ongaku Chokai No Uta- 3 · 2004
- Tabidachi No Toki -Asian Dream Song-
- 6, Shogakusei No Tame No Kokoro No Harmony Best! -Sotsugyosiki/Okurukai No Uta- · 2000
- Tabidachi no Hi ni (Three Parts of Mixed Voices)
- Believe - Utai Tsugareru Sotsugyoshiki no Uta, Atarashii Sotsugyoshiki no Uta · 2000

Top Songs