Initially known for producing hard trance, German duo Cosmic Gate gradually shifted to a more accessible progressive trance sound on their way to becoming one of the genre's most successful duos, selling out arenas and releasing dozens of club hits. Claus Terhoeven (born 1972) and Stefan Bossems (born 1967), both from the West German city of Krefeld, first met in 1997, but started collaborating the following year when they found themselves in the same studio by chance. Driving singles "The Drums" and "Mental Atmosphere" appeared on EMI in 1999, but the duo's breakthrough came ...