A supergroup: Where two or more musical superstars join to make a band…sometimes achieving success, sometimes, just irritating people with the results…

• Oysterhead
  The Grand Pecking Order (2001)
  «Little Faces»

  Con Trey Anastasio, de Phish; Les Claypool, de Primus y Les Claypool’s Frog Brigade y Stewart Copeland, de The Police

• Transatlantic
  Bridge Across Forever (2001)
  «Suite Charlotte Pike» (yeah! the whole stuff)

  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

• Liquid Tension Experiment
  Liquid Tension Experiment (1998)
  «Universal Mind»

  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

• A Perfect Circle
  eMOTIVe (2004)
  «Counting Bodies Like Sheep To The Rythm Of The War Drums»

  Con Maynard James Keenan, de Tool; Billy Howerdell; James Iha (ex-Smashing Pumpkins)

• 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

• Gordian Knot
  Emergent (2003)
  «Singing Deep Mountain»

  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

• Tony Levin
  Pieces Of The Sun (2001)
  «Apollo»

  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

• The Tangent
  The Music That Died Alone (2003)
  «The Canterbury Sequence»

  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

• The Reindeer Section
  Ya’ll Get Scared Now, Ya Hear! (2001)
  «Sting»

  Con Snow Patrol, Mogwai, Astrid, Belle & Sebastian