Choirfall: a Modern Vampire Romantasy of Perfume & Blood (The Blood Collector Series) by Jade Christy

In the series finale, perfumer Aria Holt and vampire Gabriel de Clermont must free a century-old chorus of cursed bottles from bloodlust without destroying their souls. The bottles don't want to be mute... Celeste, the unhinged rival vampire who started it all, is cornered. But a new enemy steps from the dark: Vraxiel, a demon and vampire-hunter who hates vampires and believes only two paths exist—conduct (as in use the bottles himself to bring down vampires) or purge (kill them). With witch Luna, shifter Loki, vampire Apollo Knox, Detective Reyes, and Brother Finnian—a Benedictine vampire monk who can pray and duel—Aria and Gabriel fight for the bottles and a future. The last battle isn’t about noise; it’s about choice. And the final note belongs to Aria.