Distinguishing basic kinds of music

In the U.S., to distinguish such basic kinds of music: folk (folk), popular (pop) jazz and classical music. In this series, classical music is, perhaps, in isolation, although in recent years in the United States has been a steady trend toward mergers of classical music and jazz. As for other kinds of music - folk, pop and jazz - that they were in many cases so closely linked that sometimes divide them is simply impossible. This is largely due to the fact that this form of folk music, Negro, like the blues, becomes the basis of not only jazz, but popular music.
It is not considered a pop, so-called "commercial" music - a phenomenon in itself is quite remarkable that gave the world such distinctive singers like Bing Crosby, Frank Sinatra, Pat Boone, Peggy Lee, Andy Williams. Is not considered an easy and orchestral music, part of an integral part of pop music, although she, too, is rich and distinctive - Mancini orchestras, Monrovian, Rhea Konnifa, Nelson Riddle showed this clearly.
"Rock music" - a collective term for a variety of genres of popular music, the United States, Britain and other countries that have emerged and developed, have altered in recent decades. This term includes such sharply differing styles, as a rather primitive rock and roll (also known as "early" or "innocent", a rock) and the most complex improvisational style of the late jazz-rock. Quite often, the rock is also called "new music".
Rock music - the music of young people, mostly American and British youth, created and executed by the youth for youth audiences. In a sense, this is not professional, "homemade" music, not compose professional «tune-smiths» and the executable is not professional singers and musicians. However, in the bowels of big-beat grew up and became the true virtuosos - composers and performers. With all this immediacy is an integral feature of rock music.