At the end of a job interview once, I was asked to choose between Star Wars and Star Trek. I made a favourable impression when, instead, I replied, "Dune".
Because the Dune Universe is as emotional as it is scheming and so deep in human accomplishments and shortcomings as it is rich in mythos.
The lyrics of this song are written in Chakobsa, the language of the Fremen, the desert people moulded upon the Arab nations and their control over the Spice that allows the world to function.
Do yourself a favour and pick all six of the original Dune books. Try to steer clear of the latest fun-exploitation novels churned out every year in the name of Frank Herbert. They do little more than soil Frank's vision.
And even thought the 1984 David Lynch's Dune film is considered canon, do not overlook the Dune (2000) and Children of Dune (2003) Mini Series. This where this magical music comes from.