What is the definition of Concentrations Macabre?

"Aconcentrations macabre" is a delightfully grim term that describes an unholy blend of substances or ideas that's so morbid, it's like a party gone wrong with a side of ghostly laughter. It's the kind of phrase you'd use when describing a room full of stale tobacco, a vial of questionable potion, and a morbid fascination with death - all wrapped up in a macabre, yet strangely enticing package.

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Here's an unsettling example sentence: "After the funeral, Dr. Wiltons decided to host an 'Aconcentrations macabre' gathering to celebrate his newfound love for necromantic herbalism."