=== Som sessions/gæstemusiker ===
* [[The Enid]] – ''[[The Seed and the Sower]]'' (1987)
* [[Barbara Dickson]] – ''Parcel of Rogues'' (1994), ''[[Full Circle (Barbara Dickson-album)|Full Circle]]'' (2004)
* [[Kathryn Tickell]] – ''Debatable Lands'' (1999)
* [[Mostly Autumn]] – ''[[The Spirit of Autumn Past]]'' (1999), ''[[The Last Bright Light]]'' (2001), ''[[Passengers (Mostly Autumn-album)|Passengers]]'' (2003), ''[[Storms Over Still Water]]'' (2005), ''[[Storms Over London Town]]'' (2006), ''[[Heart Full of Sky]]'' (2007), ''[[Glass Shadows]]'' (2008), ''[[Go Well Diamond Heart]]'' (2010), ''[[Ghost Moon Orchestra]]'' (2012)
* [[Roy Harper (sanger)|Roy Harper]] – ''[[Royal Festival Hall Live - 10 June 2001]]'' (2001)
* [[Mermaid Kiss]] – ''Etarlis'' (2007)
* [[Magenta (walisiske band)|Magenta]] – ''Home'' (2006), ''Metamorphosis'' (2008)
* [[Johanna Kurkela]] – ''Hyvästi, Dolores Haze'' (2010)
* Kompendium – ''Beneath The Waves'' (2012)
* [[Mike Dawes]] – ''What Just Happened?'' (2013)
* [[Ayreon]] – ''[[The Theory of Everything (Ayreon-album)|The Theory of Everything]]'' (2013)
* [[Tuomas Holopainen]] – ''[[Music Inspired by the Life and Times of Scrooge]]'' (2014)
* [[Gandalf's Fist]] – ''A Forest of Fey'' (2014)<ref>{{cite web|author=Martin Kielty |url=https://www.teamrock.com/news/2014-08-12/donockley-nolan-stevens-guest-with-gandalf-s-fist |title=Teamrock News: Donockley, Nolan, Stevens and Mitchell guest with Gandalf’s Fist |publisher=teamrock.com |date=12. august 2014 |accessdate=17. august 2014}}</ref>
* [[Dave Bainbridge (band)|Dave Bainbridge]] – ''Celestial Fire'' (2014)
* [[Kamelot]] – ''[[Haven (Kamelot album)|Haven]]'' (2015)
* [[Karnataka (band)|Karnataka]] – ''The Gathering Light'' (2010), ''Secrets of Angels'' (2015)
* [[Sonata Arctica]] – ''[[The Ninth Hour (album)|The Ninth Hour]]''<ref name="tnhow">{{cite web|title=The Ninth Hour (2016)|url=http://www.sonataarctica.info/discography/the-ninth-hour|website=The Ninthe Hour at Sonata Arctica official website|accessdate=12. november 2016}}</ref> (2016)
* [[Steve Hackett]] – ''[[The Night Siren]]'' (2017)
Levende_personer Musik Organisationer