| Name | Format | Duration | Size | Date | |
|---|---|---|---|---|---|
| koei_01.wav | Waveform Audio File Format | 30s | 666KB | 1995-06-30 | |
| koei_02.wav | Waveform Audio File Format | 22s | 499KB | 1995-06-30 | |
| koei_03.wav | Waveform Audio File Format | 29s | 643KB | 1995-06-30 | |
| koei_04.wav | Waveform Audio File Format | 21s | 468KB | 1995-06-30 |