| Name | Format | Duration | Size | Date | |
|---|---|---|---|---|---|
| koei_01.wav | Waveform Audio File Format | 15s | 350KB | 1995-01-24 | |
| koei_02.wav | Waveform Audio File Format | 30s | 672KB | 1995-01-24 | |
| koei_03.wav | Waveform Audio File Format | 31s | 692KB | 1995-01-24 | |
| koei_04.wav | Waveform Audio File Format | 22s | 494KB | 1995-01-24 |