W21st Century (Blue System album)WBackstreet Dreams (album)WBody Heat (Blue System album)WBody to Body (Blue System album)WDéjà vu (Blue System album)WForever Blue (Blue System album)WHello America (album)WHere I Am (Blue System album)WObsession (Blue System album)WSeeds of HeavenWTwilight (Blue System album)WWalking on a RainbowWX – Ten