This will probably be deleted from ইউটিউব for copyright soon, but I will post it while it lasts. This is a smashing opening from an otherwise mediocre anime, Aldnoah.Zero.
This is my সেকেন্ড পছন্দ Kalafina song. Its instrumental resembles that of Sayaka Miki's character theme from the Madoka franchise, likely because they originate from the same composer.