Attar of Nishapur in Persia, much of medicine and drugs were based on herbs. Therefore, by profession he was similar to a modern-day town doctor and pharmacist. Rose oil means attar. Several musical artists have albums or songs which share the name of his most famous work, "Conference of the Birds", as well as the themes of enlightenment contained therein. Notably, jazz bassist David Holland's album, which was written as a metaphor for his own enlightenment, and Om's Conference of the Birds, which deals with extremely esoteric themes often connected with metaphors of flight, inward vision, destruction of self, and oneness with the
Bergamot essential oil and furanocoumarins. The main compounds in the oil are limonene, linalyl acetate, linalool, γ-terpinene and β-pinene, and in smaller quantities geranial and β-bisabolene. The main non-volatile compounds are coumarins (citropten, 5-geranyloxy-7-methoxycoumarin) and furanocoumarins (bergapten, bergamottin). The bergamot essential oil is particularly subject to adulteration being an essential oil produced in relatively small quantities. Generally adulteration is to "cut" the oil, i.e. adding distilled essences of poor quality and low cost, for example of bitter orange and bergamot mint and/or mixtures of terpenes, natural or synthetic, or "reconstruct" the essence from synthetic chemicals, coloring it with chlorophyll. Worldwide, each year, around