 Both albums focused on keyboards and band members' instrumental skills, and their efforts resulted in two fundamental albums, that institutionalize classic progressive metal and a - "Images and Words" (1992) and "Awake" (1994).As for Europe, among the pioneers are the Germans Sieges Even, who, starting from the techno thrash of Watchtower, explore the more technical and angular side of progressive metal with "The Art of Navigating by the Stars" (2005).The following groups are some of the other notable progressive metal bands that formed in the US.