I know Behemoth certainly isn't prog or power, but I know a lot of you like them. This is their first tune in 4 years and I love it. Great atmosphere and very cool video, but as a warning it is quite explicit.
http://www.metalsucks.net/2013/12/04/last-behemoth-release-new-video-song-blow-trumpets-gabriel/
http://www.metalsucks.net/2013/12/04/last-behemoth-release-new-video-song-blow-trumpets-gabriel/