That serves as a reminder that this song is more or less "reconstructed" from the forever-lost original one and also lets us compare their interpretations. Surprisingly, I love the samuraiguitarist version : there is something unique in the mix of new technology and ancient music but also a melancholy only electric guitar (and violin?) can bring...
On a side note and like another comment mentioned : it's surprising that, like when I've read Gilgamesh (oldest known written story), there is a very modern feel to it. Not much really changed in 3400 years except for technology...