"a singular aspect" is a correct and usable phrase in written English.
You can use it to refer to a single element or characteristic of something in comparison to other aspects. For example: "The novel's elegant writing style was a singular aspect that made it stand out from others in its genre."
In this scene, the figure of the patriarch takes on a singular aspect.
A singular aspect of his talent was as an expert in articulating complex ideas clearly.
IT is a singular aspect of military life that men and women in uniform give up some of their basic rights as American citizens, starting with those protected by the First Amendment.
What gave the house a singular aspect was that she had gradually acquired, and demolished, the half-dozen surrounding houses, and put a brick wall around her little urban estate.
A loved one's voice is among what people miss the most, and a singular aspect of this tragedy was that the voices of so many of the doomed were recorded in their last hour.
The work in this article is complementary to these efforts to integrate accelerators into cloud computing services, but we focus on a singular aspect of this broader challenge.
Most of the time, though, you have to be a fanatic news jockey to notice pieces about what could be considered the most singular aspect of the American overseas persona: our "empire of bases" (as Chalmers Johnson used to call it).
Perhaps the most singular aspect of Fraser's foreign policy was his activism in the Commonwealth.
That, of course, would remain the most singular aspect of Sinatra's interpretive art: his ability to make each song his own, to convey its emotional essence by investing it with his own deepest feelings.
But perhaps the most singular aspect of Jujuy is its dramatic landscape: more than 20,000 square miles of salt deserts, untamed jungles and an endless maze of multicolored rocky mountains rising up to 16,000 feet, threaded by a scenic ravine called Quebrada de Humahuaca — a onetime Inca trade route leading north to Bolivia, now a Unesco World Heritage site.
It's the singular aspect of my being that most contributes to my being the luckiest man on Earth.
