Karl Hyde and Rick Smith, aka Underworld, have now been making music for 30 years. They formed Underworld in 1987, peaking as a trio with Darren Emerson in the mid-90s. Barking is their first new material in three years and the first time they've collaborated with other producers. From Dubfire on pounding opener "Bird 1" to drum'n'bass artist High Contrast on "Scribble", via dubstep producers Appleblim and Al Tourettes ("Hamburg Hotel"), said collaborators have injected fresh energy into the duo, but they're still unmistakably Underworld.