| Label: | Eagle Records EAGXS258 |
| Genre: | Electronic |
| Style: | Jazzdance |
| Format: | CDr (Maxi-Single , Promo) |
| 1 | What's In Your Head (Radio Edit) | 3:28 |
| 2 | What's In Your Head | 3:33 |
| 3 | Boogie | 4:13 |
| Label: | Absolutely Records ABR 037 |
| Genre: | Electronic |
| Style: | Garage House, House |
| Format: | Vinyl (12") |
| A1 | What's In Your Head (Phunk Investigation Club Mix) » Remix: Phunk Investigation | |
| B1 | What's In Your Head (Phunk Investigation Vulcan Dub Mix) » Remix: Phunk Investigation |
| Label: | Absolutely Records ABR 037 |
| Genre: | Electronic |
| Style: | House, Garage House |
| Format: | Vinyl (12" , Promo) |
| A | What's In Your Head (Phunk Investigation Club Mix) » Remix: Phunk Investigation | 7:27 |
| B | What's In Your Head (Phunk Investigation Vulcan Dub Mix) » Remix: Phunk Investigation | 8:10 |
| Label: | GMW Entertainment CANDY001 |
| Genre: | Electronic |
| Style: | Garage House |
| Format: | Vinyl (12" , Promo) |
| A | What's In Your Head (Phunk Investigation Club Mix) » Remix: Phunk Investigation | |
| AA1 | What's In Your Head (Phunk Investigation Vulcan Dub Mix) » Remix: Phunk Investigation | |
| AA2 | What's In Your Head (Ferranti Mix) » Remix: Ferranti | |