Underworld are a British techno institution whose sound is a progressive synthesis of old and new, an approach that has served them well for several decades. The trio's two-man front line, vocalist Karl Hyde and keyboard player Rick Smith, have been recording together since the early-'80s new wave explosion. After the pair released a pair of obscure rock albums, they hit it big the following decade with new recruit Darren Emerson. Traditional song forms were jettisoned in favor of Hyde's heavily treated vocals, barely-there whispering, and surreal wordplay, stretched out over ...