Versions

• Bird 1
  Underworld (6:52) [Album Version]
• Bird 1 (Clouds Remix Dub)
  Underworld (4:40) [Remix]
• Bird 1 (Clouds Remix)
  Underworld (4:40) [Remix]
• Bird 1 (Instrumental)
  Underworld (6:53)
• Bird 1 (Lone Dub)
  Underworld (5:23) [Remix]
• Bird 1 (Lone Remix)
  Underworld (5:23) [Remix]
• Bird 1 (Mark Broom Dub)
  Underworld (6:37) [Remix]
• Bird 1 (Mark Broom Vocal Mix)
  Underworld (8:08) [Remix]
• Bird 1 (Radio Edit)
  Underworld (3:36) [Edit]
• Bird 1 (SBTRKT Remix)
  Underworld (5:22) [Remix]
• Bird 1 (Tong & Rogers Praia Do Rosa Mix)
  Underworld (8:19) [Remix]
• Strumpet Groove
  Underworld (5:06) [Early Version]