Taking liberties with Led Zeppelin...
I've given the thumping opener from Led Zeppelin III and given it a bit more of an orchestral quality, adding elements of polytonality, contrapuntal texture and even entirely new melodic ideas, while keeping the raw Viking energy of the original. Stick around for the end, I think the use of tierce-de-picardie underscoring a post-cadential middle-eastern dorian flourish is a nice cap to a four part canon in thirds.
Valhalla I am coming!
(Trying out Filmora for the split-screen hence the watermark. Heaps better than HitFilm Express)