- The Hardest Heart (Short Cut)
- The Hardest Heart (Suburban Short cut)
- The Hardest Heart (Kai Tracid Short cut)
- The Hardest Heart (Ramon Zenker Short cut)
- The Hardest Heart (Corvin Dalek Short cut)
- The Hardest Heart (Cafe Del Mar Ambient mix)
- The Hardest Heart (Mark Reeder's Hardened Soul radio mix)
- The Hardest Heart (original mix)
- The Hardest Heart (Suburban mix)
- The Hardest Heart (Kai Tracid mix)
- The Hardest Heart (Ramon Zenker mix)
- The Hardest Heart (Ramon Zenker instrumental mix)
- The Hardest Heart (Corvin Dalek's Sexinfarkt remix)
- The Hardest Heart (Joshua Cunningham 2007 Rework)
- The Hardest Heart (Mark Reeder's Heart & Soul mix)
- The Hardest Heart (Mark Reeder's Hardened Soul mix)
- The Hardest Heart (Ambient mix)
| 17 tracks | Soundcolours |
