I think of primal music and pop music as dionysian and classical music as apollonian. I'm no expert on this, but I think classical music is reflective, formal, abstract and spiritual with an affinity with mathematics. It also has a strong relationship with the Church, prayer, religion, death. While there is dancing associated with certain classical genres, these dances tend to be very formalized and regulated by society, with lots of clothes and supervision. The purpose of the dances seems to be social rather than sexual intercourse.
But pop music is all about sex, Elvis being perhaps the best example. Pop music is often seen as a threat, a kind of pied piper. These genres are usually inseparable from dance, courtship and sex. Look at tango, hip-hop or modern Latin for instance. And one genre is even called Dance. The puritans in Scotland banned dancing for this reason. Composers, singers and musicians are often sex symbols - even Sade and Madonna continue to exude a sexual presence, despite the dominance of our youth culture, and old men like Mick Jagger try to. Despite being called "the Voice," Sinatra was known, admired and feared as much for his charisma, his earthy strength and power. And what about all the androgynous stars, like Michael Jackson, David Bowie, Elton John, Sinead O'Connor? In this sense I believe modern Western music has more in common with the traditional music and dance of Africa, India and South America than it does with Christian Europe.
PS: Edna, apropos your post on fitness, I would add dance, especially ballet, to my list of physical activities worth trying.