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Disc1
| 1 | The Riddle (vocal radio edit) | Gigi D’Agostino | 3:35 |
| 2 | The Riddle (instrumental LP version) | Gigi D’Agostino | 4:06 |
| 1 | The Riddle (vocal radio edit) | Gigi D’Agostino | 3:35 |
| 2 | The Riddle (instrumental LP version) | Gigi D’Agostino | 4:06 |