Supergrupos, Proyectos Alternos y Colaboraciones

1. Oysterhead: "Little Faces" [The Grand Pecking Order, 2001]
   Con Trey Anastasio, de Phish; Les Claypool, de Primus y Les Claypool's Frog Brigade y Stewart Copeland, de The Police
2. Transatlantic: "Suite Charlotte Pike" (yeah! the whole stuff) [Bridge Across Forever, 2001]
   Con Mike Portnoy, de Dream Theater y Liquid Tension Experiment; Pete Trewavas de Marillion y Kino; Neal Morse, de Spock's Beard; y Roine Stolt, de The Flower Kings
3. Liquid Tension Experiment: "Universal Mind" [Liquid Tension Experiment, 1998]
   Con Tony Levin, de Peter Gabriel, King Crimson, Bozzio-Levin-Stevens y más; Jordan Rudess, de Dixie Dregs y Dream Theater; Mike Portnoy, de Dream Theater, Transatlantic; y John Petrucci, de Dream Theater
4. A Perfect Circle: "Counting Bodies Like Sheep To The Rythm Of The War Drums" [eMOTIVe, 2004]
   Con Maynard James Keenan, de Tool; Billy Howerdell; James Iha (ex-Smashing Pumpkins)
5. Leonardo - The Absolute Man: "This Time, This Way" [2001]
   Colaboración en una obra, con las voces de James Labrie, de Dream Theater y Lisa Bouchelle, de Mastermind
6. Gordian Knot: "Singing Deep Mountain" [Emergent, 2003]
   En este track participan, aparte de Sean Malone (Cynic), Jason Göbel (Cynic), Paul Masvial (Cynic, Death), Bill Bruford (Earthworks, Yes, King Crimson y más), Steve Hackett (GTR, Genesis y otros), Jim Matheos (Fates Warning) y Sonia Lynd
7. Tony Levin: "Apollo" [Pieces Of The Sun, 2001]
   Con Larry Fast, Jerry Marotta y The California Guitar Trio (en este track)7Blackfield: "Blackfield" [Blackfield, 2004]
   Con Steve Wilson, de Porcupine Tree, No-Man y Aviv Giffen
8. The Tangent: The Canterbury Sequence [The Music That Died Alone, 2003]
   Con Andy Tillison, de Parallel Or 90 Degrees, The Membranes; Roine Stolt, de Flower Kings, Transatlantic; David Jackson, de Van Der Graaf Generator, Guy Manning
9. The Reindeer Section: "Sting" [Ya'll Get Scared Now, Ya Hear!, 2001]
   Con Snow Patrol, Mogwai, Astrid, Belle & Sebastian