| Katou Idzumi Songs |
| Suki Dakara |
| Kotoba |
| Kimi ga Iru |
| Aozora |
| Utsukushi Sugite |
| Suki Dakara (scat) |
| Kimi ga Iru (scat) |
| Kotoba ~Tabidachi~ |
| Suki Dakara (Instrumental) |
| Kimi ga Iru (Instrumental) |
| Kotoba (Instrumental) |
| Utsukushisugite |
| Bokura ga Ita - Kimi ga Iru |
| Kotoba (Kimi ga Iru / Kotoba) |
| Kotoba(OST Это были мы♥ /Bokura Ga Ita) |
| Sayonara ga Ienai |
| Suki ni Natte Yokatta |
| (bokura ga ita) |
| 加藤いづみ |
| Ame ga Furu Kutsu |
| Kotoba Nakushite |
| Kimi ga Iru (Bokura ga Ita ED7/ED9 Single - Kimi ga Iru / Kotoba) |
| パーソナルCOLOR |
| Bokura ga Ita - Suki Dakara |
| Kami wo Mitte Shimaou |
| Kotoba (Bokura ga Ita ED) |
| Suki Dakara ( Это были мы) |
| Taiyou ga Yondeiru |
| Sakamichi |
