The Resonance Of Bleeding Things. Blood letting series’s, #8

Here is an enticing book summary (blurb-style) for "Bloodletting":---BLOODLETTINGA novel of resonance, ruin, and the art of sacrifice. All great art is a kind of hunger. But some hungers are smarter than others. Lucas Croft, a composer shattered by the death of his beloved Elara, receives a mysterious invitation to the Brutalist Estate-a remote mountain retreat where artists are promised the means to complete their masterworks.
The only requirement: his grief. Inside its soundless halls, he discovers a piano with too few keys, an architecture that breathes, and a terrible truth: his sorrow is not just inspiration, but fuel for something ancient and hungry. Meanwhile, in a gleaming city where emotions are engineered and sold, Elara Vance is a Scribe-a professional writer of apologies and love letters, skilled at simulating feelings she no longer possesses.
But when she discovers that her own blood, used as ink, can produce words of unbearable authenticity, she becomes addicted to the power of true connection, one crimson stroke at a time. As Lucas pours his life into a symphony meant to resurrect the dead, and Elara sells pieces of her soul to mend the relationships of strangers, their worlds begin to resonate across the void. Both are being watched.
The mysterious Stahlman Foundation seeks to use Lucas's grief to tear open the fabric of reality. The city's emotion-regulating Directorate sees Elara's forbidden talent as a threat to be contained. And somewhere between them, a phantom waits, eager to be born from blood, music, and sacrifice. In a tale where art bleeds, buildings dream, and love can be a lethal frequency, two strangers must discover what they are willing to destroy-and what they are willing to become-to create something truly eternal.---For fans of:The Secret History meets Annihilation, with the gothic dread of Mexican Gothic and the body horror of Clive Barker.