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* 2008 – [[Xystus]] – ''[[Equilibrio (album)|Equilibrio]]'', in ''Act 1 - My Song of Creation'', ''Act 2 - Destiny Unveiled'' e ''Act 2 - God of Symmetry''
* 2009 – [[Sons of Seasons]] – ''[[Gods of Vermin]]'', in ''Fallen Family'', ''Wintersmith'' e ''Fall of Byzanz''
* 2010 – Kamelot -– ''[[Poetry for the Poisoned]]'', in ''House on a Hill'', ''Poetry for the Poisoned, Pt. II: So Long'' ed in ''Poetry for the Poisoned, Pt. III: All Is Over''
* 2011 – [[Sons of Seasons]] – ''[[Magnisphyricon]]'', in ''Sanctuary''
* 2011 – [[MaYaN]] -– ''[[Quarterpast]]'', in ''Symphony of Aggression'', ''Mainstay of Society'', ''Bite the Bullet'', ''Drown The Demon'' e ''Sinner's Last Retreat''
* 2014 – [[Timo Tolkki's Avalon]] -– ''[[Angels of the Apocalypse]]'', in ''High Above Me'' e ''Angels of the Apocalypse''
* 2014 – [[Angra]] -– ''[[Secret Garden (Angra)|Secret Garden]]'', in ''Secret Garden''
* 2014 – [[Countermove]] -– ''[[The Power of Love (Frankie Goes to Hollywood)|The Power of Love]]'', cover dei [[Frankie Goes to Hollywood]]
* 2015 – [[Karmaflow]] -– ''[[Karmaflow: The Original Soundtrack]]'', in ''The Creator and the Destroyer''
* 2015 – [[Leaves' Eyes]] -– ''[[King of Kings (Leaves' Eyes)|King of Kings]]'', in ''Edge of Steel''
* 2017 – Ayreon -– ''[[The Source (Ayreon)|The Source]]'', in ''The Day That the World Breaks Down'', ''Sea of Machine'', ''All That Was'', ''Condemned to Live'', ''The Dream Dissolves'', ''Deathcry of a Race'', ''The Source Will Flow'' e ''The Human Compulsion''
* 2017 – [[Exit Eden]] -– ''[[Rhapsodies in Black]]'', in ''[[Frozen (Madonna)|Frozen]]'', cover di [[Madonna (cantante)|Madonna]], e in ''[[Skyfall (singolo)|Skyfall]]'', cover di [[Adele (cantante)|Adele]]
* 2017 – [[Tarja Turunen]] -– ''[[Feliz Navidad (singolo José Feliciano)|Feliz Navidad]]'', cover di [[José Feliciano]]
* 2020 – Ayreon -– ''[[Electric Castle Live and Other Tales]]''
* 2020 – Ayreon -– ''[[Transitus]]'', in ''Listen to My Story'', ''Seven Days, Seven Nights'', ''This Human Equation'', ''Daniel's Vision'' e ''Your Story Is Over!''
* 2023 – [[Apocalyptica]] -– ''Rise Again''
* 2023 – Kamelot -– ''The Awakening'', in ''New Babylon''
* 2023 – Junge Bühne Sindelfingen -– ''Die Schwarze Mühle'', in ''Gesang der Schwäne''
== Note ==
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