Musk has been a prized note in perfumery for centuries, known for its deep, sensual, and animalic qualities. In its purest form, musk was historically derived from the glandular secretions of the male musk deer, found primarily in the Himalayas and parts of Asia. The real musk from these deer was prized for its rich, earthy, and slightly sweet scent, often described as warm, woody, and complex.