's first album initially surfaced over a year after their home-recorded debut single, "Chime," crossed over from underground clubs to the U.K. charts, prompting the duo to appear on Top of the Pops. They wore shirts in protest of the poll tax, did little more than stare at their unplugged equipment as the crowd clapped along to the instrumental, and weren't invited back for several years. Even as the duo ascended and became one of the biggest acts in electronic music, they maintained their allegiance to the free-spirited ethos of rave culture, as well as the activist mentality of their roots in punk rock. 1991's , commonly referred to as the Green Album, is a record clearly influenced by the innovations of Detroit techno and British synth pop, with tough, post-industrial beats akin to the bleep techno scene that was emerging at the time, but with melodies that could lure in pop radio listeners. The Star Trek samples on opener "The Moebius" align the group's music with the futurism of science fiction, while "Speed Freak" channels the ecstatic rush of a rave at peak time. This contrasts with "Desert Storm," which lumbers at half speed for 12 minutes. Other tracks blend upbeat keyboards with metallic percussion sounds, shaping the influences of and Chicago acid house into something fresh and distinctive. The breathtaking "Belfast" demonstrated the young duo's ability to craft emotional, cinematic epics, setting the stage for anthems like "Halcyon" as well as their subsequent work in film soundtracks. had quite a complicated release history, with differing track listings for the original CD, LP, and cassette configurations. On top of this, the American edition was vastly overhauled, switching "Belfast" from a climactic finale (apart from a brief unlisted CD outro) to the first song, and including studio versions of "Chime" and "Midnight" rather than the live recordings on the U.K. issue, as well as a remix of "Speed Freak" in place of the original. Furthermore, two of the band's more punk-minded tracks, the -sampling "Satan" and "Choice," borrowing a rant from the anarchist hardcore group , were lifted from singles. Regardless of which edition one hears, contains some of the pair's all-time greatest songs. Their music improved by leaps and bounds with subsequent masterpieces and , but their debut is undoubtedly a seminal record, and holds a unique place in electronic music history. ~ Paul Simpson