=== Gæsteoptrædender (i udvalg) ===
* ''[[Jesus Christ Superstar (album)|Jesus Christ Superstar]]'' (1970, original album recording)
<!-- * Sammy – ''Sammy'' (1972) – Co-producer
* Jerusalem – ''Jerusalem'' (1972) – Producer
* Pussy – ''Feline Woman / Ska Child'' (1972) – Producer
* Cliff Bennett – ''Nightride'' (1981) – Co-producer
* Zero Nine – ''Blank Verse'' (1982) – Co-producer
* ''[[Rock Aid Armenia]] – The Earthquake Album'' (1990, "Smoke On The Water '90")
* Pretty Maids – ''In Santa's Claws'' (EP, 1990, "In Santa's Claws", "A Merry Jingle")
* The Bolland Project – ''Darwin (The Evolution)'' (1992, "Overture", "Finale", "The Long Goodbye / The Final Curtain Falls")
* Mihalis Rakintzhs – ''Getaway'' (1993, "Getaway", "My Heart Remains The Same", "I Think I Know")
* Ray Slijngaard & Ian Gillan – ''Smoke On The Water Rock 'N' Rap Extravaganza'' (1998, "Smoke On The Water")
* Jill Towers – ''Welcome to Dreamfield'' (1999) – Co-producer
* Jill Towers – ''Miserably Happy'' (2001, harmonica on "I Know What U'r Lookin'")
* Dean Howard – ''Volume One'' (2004, "Smokescreen")
* ''[[Rock School]] – Movie soundtrack'' (2005, "Highway Star")
* Leslie West – ''Guitarded'' (2005, "Hang Me Out To Dry")
* ''[[Blue Dragon]] – Video game soundtrack'' (2006, "Eternity")
* Michael Lee Jackson – ''In a Heartbeat'' (2006, "Have Love Will Travel")
* Hoochie Coochie Men & Jon Lord – ''Danger. White Men Dancing'' (2007, "Over & Over", "If This Ain't The Blues")
* WhoCares – ''Out of My Mind / Holy Water'' (2011, charity CD single)
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Levende_personer Kunst Musik Organisationer