ที่ผมเสียดายมาก คือเพลงที่ Jon เป็น Guest Appearance ครับ มีเยอะมาก น่าจะรวบรวมออกขายด้วย
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Guest Appearances (ชื่อเพลงอยู่ในวงเล็บ ต่อท้ายชื่อ Artists/ Titles)
1. King Crimson: Lizard, 1970 (Prince Rupert Awakes)
2. Johnny Harris: All to Bring You Morning, 1971
3. Colin Scot: Colin Scot with Friends, 1971
4. Vangelis: Heaven and Hell, 1975 (So Long, So Clear)
5. Alan White: Ramshackled, 1976 (SpringSong of Innocence )
6. Vangelis: Opera Sauvage, 1979
7. Vangelis: See You Later, 1980
8. Fundamental Frolics, ?1981 (I Hear You Now)
9. Rick Wakeman: 1984, 1981 (The Hymn )
10. Mike Oldfield: Crises, 1983 (In High Places )
11. Metropolis Original Motion Picture Soundtrack, 1984 (Cage Of Freedom)
12. St. Elmo's Fire/Music from the Original Motion Picture Soundtrack, 1985 (This Time It was Really Right )
13. John Paul Jones: Music from the Film Scream for Help, 1985 (Silver Train /Christie)
14. Tangerine Dream: LegendMusic from the Motion Picture Soundtrack, 1986 (Loved By The Sun)
15. Mike Oldfield with Jon Anderson: Shine, 1986 (single) (Shine)
16. Gowan: Great Dirty World, 1987 (Moonlight Desires)
17. Toto: The Seventh One, 1988 (Back Up Vocal:Stop Loving You)
18. Requiem for the AmericasSongs from the Lost World, 1989 (Within The Lost World /Far Far Cry Part I)
19. Reach Out, 1989 (single) (Reach Out: Amounderness )
20. Kitaro: Dream, 1992 (Lady Of Dreams / Agreement / Dream Of Chant / Island Of Life)
21. Symphonic Music of Yes, 1993 (Roundabout / I 've Seen All Good People)
22. Charlie Bisharat: Along the Amazon, 1993 (Along The Amazon)
23. Charlie Bisharat: Along the Amazon Sampler, 1993
24. C2tHype: C2tHype, 1994
25. Tadamitsu Saito: It's About Time, 1994 (Doshyamo (Then and Now) / It's About Time )
26. Milton Nascimento: Angelus, 1994 (Estrelada )
27. Ayman: Dancing with My Soul, 1994 (Opionium)
28. The Deseo Remixes, 1995
29. Cielo y Tierra: Heaven and Earth, 1996 (El Dia (remix) / La Segunda Oracion (remix))
30. Steve Howe: Portraits of Bob Dylan, 1999 (Sad Eyed Lady Of The Lowlands )
31. various artists: Streams, 1999 (The Only Thing I Need )
32. Bela Fleck and the Flecktones: Outbound, 2000 (A Moment So Close / Aimum)
33. Mike Read/Sir John Betjeman: Songs, 2002 (Youth & Age )
34. Eduardo M. Del Signore: Captivated, 2002 (Hope)
35. Robert Downey Jr.: The Futurist, 2004 (Your Move)
36. One World Project: Grief Never Grows Old, 2005 (single)
37. various artists: Rock School, 2005
38. No Nation: Illumine (A Rock Opera), 2005 (One Heaven (One thousand years ago))
39. The Fellowship: In Elven Lands, 2006 (Dan Barliman's Jig / Elechoi / The Sacred Stones / Verses to Elbereth Gilthoniel )
เพิ่มเติม
40. Jon appears on the new Dream Theater album "Systematic Chaos", as part of a vocal ensemble on the fifth track "Repentance". (2007)
41. He also contributed vocals to the new album from American Progressive Rock group Glass Hammer "Culture of Ascent".(2007)