Dark Lord M
No but I'm simply adoring "Rule the World".
It sounds good, but I hope their other songs are not as intense. I like bands like Within Temptations that are classy and Metal without all that kicking and screaming and making you feel like the singers are going to jump out and kill you.
Soul Society, Anthem, Ghost Opera, The Haunting (Somewhere in Time), March or Maniphesto, EdenEcho, Up Through the Ashes, all of the interludes--those are somewhat tame
The last two albums are really the only ones I like a LOT. Black Halo and Ghost Opera, i personally think it's some of the best music out there.
Roy Khan has a pretty intense voice.
I believe the sounds you're talking about is Symphonic Metal and/or Progressive Power metal. An obscure genre that walks the line between operatic symphony and amazing guitar playing 'oh my god where did that come form'