Quadropus

1. "Mekapses Yitonisa" – 4:22
2. "Dubway" – 3:39
3. "King Krab Battle" – 8:31
4. "Speck" – 4:34
5. "Hardball" – 13:40
6. "A Car Ride In Idealistic Ethiopia (Part 1)" – 5:47
7. "Crystal Blue" – 3:40
8. "Jungle Warfare" – 5:42
9. "Body Slam" – 3:09
10. "At Least We'd Have Today" – 9:40

• Timb Harris – violin, viola, trumpet, guitar, mandolin, Turkish mandolin, vocals, percussion
• Jason Schimmel – guitars (electric, acoustic, baritone), banjo, organ, piano, synths, harpsichord, vocals, percussion, beatboxing
• Tim Smolens – bass (electric, upright), bari guitar, piano, synths, violin/viola/cello, vocals, percussion
• John Whooley – saxophones, flute, vocals, beatboxing, organ

• String quartet on "At Least We'd Have Today" and "Speck"
  • Violins – Timb and Ben Blechman
  • Viola – Sarah Hart
  • Cello – Aria DiSalvio
• Horn section on "King Krab Battle"
  • Trumpets – Timb, Val Hall, Richard Karst
  • Trombone – Scott Harris
  • Bass trombone – Luke Kirley
  • Saxes – John Whooley, Joel Ford, Scott Norgren, Paul Tarantino, Wes Anthony
  • Tuba – John Thomas

• Produced by Tim Smolens with help from Jason Schimmel except for:
  • "Speck" – produced by Jason Schimmel
  • "Dubway" – produced by Andrew Kapner
• Recorded mostly in our living rooms (George's too), plus Bear Creek Studios, Pine Forest studios, CC's recording studio and Angelhouse Studios
• Engineered by Tim Smolens, Jason Schimmel, Chris Parsons and Trey Spruance
• Mixed by Tim Smolens, Timb Harris and Jason Schimmel
  • "Dubway" mixed by Andrew Kapner
  • "Bodyslam" mixed by Chris Parsons
  • "Jungle Warfare" and "Speck" mixed by Trey Spruance
• Additional engineering by Chris Parsons
• Artwork and layout by Mike Bennewitz

Quadropus was created in loving memory of Mary Aquinas McClafferty Whooley and John Patrick Whooley Sr.

• Composition – Greek traditional
• Arranged and transcribed by Tim and Timb
• Drums – Dave Murray
• Dombeks and percussion – Mike Shannon

• Composition – Estradasphere
• Acapellarrangement – John and Jason

• Absolutely no keyboards, drum machines, guitars or bass were used in the recording of this song.
• A live music video for the song is included on the DVD of Passion for Life.

• Composition – Iron Chef Whooley
• Horn arrangement by John and Tim
• Drums – Theo Mordey

• Composition – Schimmel
• Lyrics by Schimmel, Smolens
• Lead vocals – Jason
• String arrangement by Trey Spruance
• Piano – Jeff Attridge
• Drums – Theo Mordey

• Composition – Schimmel, Whooley, Harris
• Drums – Theo Mordey
• Percussion – Doug Smolens

• Composition – Smolens
• Drums – Dave Murray

• Composition – Whooley
• Lead vocals – John
• Organ and piano – Dale Ockerman
• Drums and tambourine – Mike Shannon

• Composition – Schimmel, Smolens
• Lyrics by Dave Murray
• Vocals – Dave Murray and Youri Raymond of Unhuman
• Drums – John Merryman of Cephalic Carnage
• Guitar solo – Kevin Kmetz

• Composition – Estradasphere, Dave Murray
• Lyrics and lead vocals – John
• Drums – Dave

• Composition – Smolens
• Lead vocals – Tim
• Vocal bridge – Joel Robinow