| Name | Year |
|---|
| The Haunting (Somewhere in Time) ft. Simone Simons | 2005 |
| Edge of Steel ft. Simone Simons | 2015 |
| Everytime It Rains ft. Simone Simons | 2007 |
| Angels of the Apocalypse ft. Simone Simons, Caterina Nix, Floor Jansen | 2014 |
| Your Story Is Over! ft. Tom Baker, Simone Simons, Amanda Somerville | 2020 |
| This Human Equation ft. Tom Baker, Simone Simons, Marcela Bovio | 2020 |
| Listen to My Story ft. Tom Baker, Simone Simons, Marcela Bovio | 2020 |
| Secret Garden ft. Simone Simons | 2015 |
| Seven Days, Seven Nights ft. Tom Baker, Simone Simons, Marcela Bovio | 2020 |
