| Name | Year |
|---|
| Valhalla ft. Kai Hansen | 2003 |
| Sign Of The Cross ft. Kai Hansen | 2001 |
| The Seven Angels ft. Kai Hansen | 2002 |
| Born Free | 2016 |
| Chalice Of Agony ft. Kai Hansen | 2002 |
| Inside ft. Kai Hansen | 2001 |
| Time Machine ft. Kai Hansen, Piet Sielck | 1999 |
| Making Headlines ft. Tobias Sammet | 2016 |
| I Want Out ft. Michael Kiske | 2017 |
| Fire and Ice ft. Clémentine Delauney, Marcus Bischoff, Richard Sjunnesson | 2016 |
| Future World ft. Michael Kiske | 2017 |
| All or Nothing ft. Clémentine Delauney | 2016 |
| Left Behind ft. Alexander Dietz, Clémentine Delauney | 2016 |
