Interesting Read: What The Noses Say
Visit OsMoz for an sweet and short roundtable among perfumers in the industry regarding their thoughts about the building blocks and their relationship with the natural essences.
You can also read about the different manufacturing techniques of the building blocks that make perfumes today: Expression, Distillation, Extraction, Enflourage, Softact, Synthetic Molecules and Nature Print.
p.s. Thanks to Anya for the tip!