Power Tale - Urfin jus and his wooden soldiers

I recently learned that a certain group Power Tale makes metal Opera based on works by Alexander Volkov. In my childhood I loved all the writer's works about a magical land, I read all six books. I downloaded the album Urfin jus and his wooden soldiers" and listen. I don't mind that they made the story for the Opera. The idea of making an Opera based on this works very good. And, in General, all the music in the Opera is good. I only liked the first song of the whole Opera (not instrumental). And that's all. In General, in the rest of the Opera was a solid beautiful words and actions, but there was little point. I do not understand why the owl Guanacastecan got hoarse vocals.
They recently released the album the Fiery God of Marranos. I have here the same comments. Whether many words and little meaning, whether it is not for me.
What do you think about the metal Opera?