As my old physics book so aptly put it, “The line that separates music and noise is thin and subjective. To some contemporary composers it is nonexistent.”1 When we hear a car drive by, we would probably not say, “Oh, that sounds beautiful!”, or even think that it is music at all, but some people might find it very musical indeed. The way dissonant/atonal music affects people changes with the individual and with the amount of exposure that individual has had to the music. It takes an acquired taste.
St. George, Max, "Music vs. Noise" (2015). Open Books -- Open Minds: All Submissions. 10.