Will you describe this piece in classical nomenclature~?

The composer that first came to mind while listening to your track was Andrew Lloyd Webber, and his Phantom of the Opera.

Wagner didn't have much with descending lines that only lasted for a spare moment. His music swelled intensity and then climaxed, but even after the climax, the energy was still there.

Metallica's Master of Puppets correct? At about 9 min. it would be pretty Wagnerian in the scope of it, but I think that you are right in that Metallicas music is, to me, often more harmonically complex than most heavy metal bands. If you haven't check out two recordings of their music. One is where they are playing with the San Francisco Symphony (S&M: Live with the SFSO) and another is a string quartet playing their music (Say Your Prayers, Little One. Vitamin E Quartet) both available on iTunes.

I checked the file you posted. Found nothing even vaguely sounding like classical music. Certainly nothing Wagnerian.

Richard Wager(ian) was an 18th century German opera composer.

Two of his compositions are known world-wide by almost every living soul: "The Ride of the Valkyries" and the "Wedding March" from "Lohengrin": "Here comes the bride, all dressed in white-------etc.": played at nearly 90% of all churhc weddings in the western world.

But I'm sure he would not appreciate his name being associated with what I just heard.

Wotan

There is nothing new in music. Everything you hear today has been before just arraigned differently with different instruments.

That is why Bach, Motzart ,Beethoven etc. are called THE MASTERS.