| 20 | Radiators - "I Am Sure" (vocal) |
| 16 | Radiators - "I Am Sure" (instrumental) |
| 101 | Radiators - "I Am Sure" (Mario Moretti remix) |
| 24 | Radiators - "I Am Sure" (Spare Parts edit) |
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| 4 | Ryan Paris |
| 4 | Azzurro 80 |
| 4 | Tunesday Recordings |
| 4 | Maxi Music Records |
| 4 | Ameros Music |
| 4 | DIGITALO |
| 4 | Alexander Robotnick |
| 4 | Fred Ventura & Alba |
| 4 | 1984 |
| 4 | Space & Synth Records |