06-29-2016, 12:08 PM
One possibility, is that what is called classical or art music differs from pop might be the format of the broadcast medium it uses to reach the public. This "classical" format has been declining, and now is usually non-profit. Otherwise, I'm not sure there's a difference anymore. "Art" music frequently is made by a credentialed member of academia, but that doesn't have to be the case. Nor is there any longer a strictly-prescribed set of instruments that are used in art music as opposed to pop, although of course there are orchestras as opposed to bands, singers, songwriters and commercial studios. But no one can dictate that a pop song can't be orchestral, or that an "art" work of music can't have lyrics or use synthesizers or guitars and drums, keyboards, sitars, etc.