The phrase "a compelling expression of" is correct and usable in written English.
It can be used when describing something that powerfully conveys a particular idea, feeling, or concept.
Example: "The artist's latest work is a compelling expression of the struggles faced by marginalized communities."
Alternatives: "a powerful representation of" or "a striking demonstration of".
Some fans (myself included) found it a more compelling expression of her edgy, poetic Scottish sensibility than the somewhat retro though undeniably beautiful Ratcatcher.
"This girl is full of light and youth, with such a compelling expression that you really do want to know what she's saying.
If you didn't have a lump in your throat a moment before, you likely did after that compelling expression of the real reason for war - to protect and preserve what we as Americans hold dear.
It is time for Congress to address directly the fusion of practicality and beauty that makes fashion such a compelling medium of expression and a profitable creative industry, one that merits its own limited industry-specific protections.
In particular, the work Wheatfield with Crows serves as a compelling and poignant expression of the artist's state of mind in his final days, a painting Hulsker discusses as being associated with "melancholy and extreme loneliness," a painting with a "somber and threatening aspect", a "doom-filled painting with threatening skies and ill-omened crows".
A network analysis generated from the protein expression profiling data revealed a compelling picture of the metabolic toxicity of heme, leading to this novel model.
Jones paints a compelling portrait of a model of mid-American respectability whose secret life found its expression in ground-breaking research.
Nevertheless, assuming that an organism's ultimate phenotype determined by gene expression levels (and subsequent post-transcriptional regulation), the conserved expression levels among parental species during earlier developmental stages is probably a compelling validation of Von Baer's third law.
Swift expressions of grace from the Amish community transformed this horror into a compelling story of forgiveness that made headlines in some 2,400 media outlets in the following days.
