- OKI Official Website (at Chikar Studio)
- OKI at Performing Arts Network Japan
- OKI at Rainforest World Music Festival
- Wikipedia
| Song Title | Topic | |
|---|---|---|
| 1 | Iuta Upopo (Pestle Song) (with Umiko Ando) | Japan |
The Complete Index to the Song Bar
| Song Title | Topic | |
|---|---|---|
| 1 | Iuta Upopo (Pestle Song) (with Umiko Ando) | Japan |