Title: Fuegos naturales 4
Instruments: 3 and 4 pianos
Date: 12/13/1997
Total Disc Time: 69:03
| Track | Title | Time |
| XI | ||
| 1 | 1: Epígrafe | :19 |
| 2 | 2: (trío) | 8:23 |
| 3 | 3: (trío) | 2:56 |
| 4 | 4: (cuarteto) | 11:13 |
| XII | ||
| 5 | 1: Epígrafe | :15 |
| 6 | 2: (cuarteto) | 8:22 |
| 7 | 3: (cuarteto) | 2:56 |
| 8 | 4: (cuarteto) | 10:59 |
| XIII | ||
| 9 | 1: Epígrafe | :18 |
| 10 | 2: (cuarteto) | 8:22 |
| 11 | 3: (cuarteto) | 2:56 |
| 12 | 4: (cuarteto) | 11:01 |