Jasmine gives a richness and intensity to fragrances: a sweet floral note, but with a dead-sexy muskiness to it. If you smell different concentrated 'absolutes' (the oily liquids created through macerating the jasmine flowers), they have their own characters: some smell medicinal, some sweet, some musky, some green.
Perfumers use only a few species of rose among the most scented: Rosa centifolia, also known as cabbage rose (in France) and Rosa damascena (in Turkey and Bulgaria). Rose is used in two extracts: the essential oil or the absolute, with the absolute being the deeper and sweeter variant.
Musk is a class of aromatic substances commonly used as base notes in perfumery. They include glandular secretions from animals such as the musk deer, numerous plants emitting similar fragrances, and artificial substances with similar odors.