Hyde (666) was a German electronic music group active from 1997 to 2005. Operating within the trance and techno sphere, the band specialized in hard trance and hands up styles, genres that flourished throughout the 1990s and 2000s. Their sound incorporated elements of eurodance, positioning them within the broader landscape of European electronic dance music of that era. The group's work exemplified the harder, more driving variants of trance music that gained prominence during their active years.