Vocal:
The Fellowship Of The Ring
- Billy Boyd
- Elijah Wood
- Dominic Monaghon
- Elizabeth Fraser
- Viggo Mortensen
- Mabel Faletolu
- The London Voices
- Enya
- Edward Ross
- Hilary Summers
- Miriam Stockley
- Ian Holm
- Ian McKellen
- The London Oratory School Schola
The Two Towers
- The London Oratory School Schola
- The London Voices
- Isabel Bayrakdarian
- Sheila Chandra
- Elizabeth Fraser
- Miranda Otto
- Ben del Maestro
- Emiliana Torrini
The Return Of The King
- The London Oratory School schola
- The London Voices
- Ben del Maestro
- Billy Boyd
- Dominic Monaghon
- Viggo Mortensen
- Renée Fleming
- Annie Lennox
- Sissel Kyrkjebø
- Liv Tyler
Instrumental
The Fellowship Of The Ring
- The London Philharmonic Orchestra
- Plan 9
- The New Zealand Symphony Orchestra
- Dermot Crehan: fiddle
- Mike Taylor: Pennywhistle, fiddle
- Jan Hendrickse: Rhaita/ Ney Flute
- Sylvia Hallett: Sarangi
- Edward Hession, Tracey Goldsmith: Musette
- Jean Kelly: Celtic Harp
- Greg Knowles: Dulcimer
- John Parricelli: Six-String Guitar, Twelve-String Guitar
- Gillian Tingay: Celtic Harp, Sonia Slany: Monochord
- Robert White: Drones/ Bodhrán
- Alan Doherty: Ney Flute/ Pennywhistle
- Alan Kelly: Bodhrán.
The Two Towers
- The London Philharmonic Orchestra
- Dermot Crehan- dilruba, hardanger fiddle, Sarangi
- Edward Cervenka- cimbalom
- Sylvia Hallett- sarangi
- Jan Hendrickse- rhaita
- Greg Knowles- cimbalom
- Sonia Slany- monochord
- Mike Taylor- whistle
- Robert White- Bodhrán
The Return Of The King
- The London Philharmonic Orchestra
- Gillian Tingay- Celtic harp
- Mike Taylor- whistle
- Sonia Slany- monochord
- John Parricelli- 6- & 12-string guitars
- Stuart McIlwham- woodflute
- Dermot Crehan- fiddle
- Sir James Galway- whistle
- Plan 9
- The New Zealand Symphony Orchestra