Why do people listen to music? this is for a project and if you have any interesting information that would a lot. : )

Music touches our souls. Out soft spots. Music describes exactly what we're feeling but can't put into our own words. Music can even change our moods. Feeling sad, try blasting some upbeat music with fun lyrics.

For me, it's to manage my moods or for pleasure mostly. some other reasons people might listen to songs are to distract themselves from something or to makeover something.
hope it helps your project.

Opposition of two melodic ideas is the  right answer