Well this is difficult. I am in no way used to writting discursive thoughts in english, which is not my native language, but I hope it's intelligible. First of, not only I am non-muslim, but an atheist. This put me in a position of wonder, because the part that most resonated to me was the constant repetition of the phrase "which of the favors of your Lord will you deny?" because I wouldn't have beginning to imagine just by myself, that they would question that openly the (I assume) expected behavior of a flawed follower (like all humans) and embrace it in a way that induces resignation but to the extend of determine strongly the faith in their savior. The catharsis aspect of the liturgy is a part of this practices I am very unfamiliar with, because I wouldn't usually try to experiment even by curiosity, but once done it and getting surprises like this one, makes it worth it.
Another great part is the "there is any reward for goodness except goodness?" bit. It reminded me to the aristotelic philosophy of ethics. Because goodness is an end in itself. And it's great to find this bits of human wisdom and knowledge in places I would have doubt a couple of times before believing it. One does need a lot of willing disposition to sit through this chant in a practice basis, but with the right mindset, believe and worldviews, I wouldn't doubt it would be a riching experience for the subject.
It does have an aesthetic aspect worth mentioning, in it's structure, that I kinda notice, and could enjoy, but for my personal taste, felt dragged in the end.
I am kinda lost on the symbolism, but that's predictable.
Was that a laugh or a sob, close to the end? That made me feel completly unaware of the sense of what the singer was feeling.
Thanks for sharing it and allowing me to try testing my perception of this.
Have a good day.