In the scene for Get Out for the diegetic sound you can hear crickets and dog barks, which amplify the feeling of being alone on a dark street making it feel a lot more eerie and creepy. He can here the squeals of the tire and the music that not a lot of people would listen to currently which further amplifies that isolation and creeps he feels and the audience feels from him walking down that street. The music he then hears then turns from diegetic to non diegetic as it the dynamics gets louder as he is knocked out. The Dynamic shift in the music is significant as it confirms that he is no longer aware of what is going on around him and the music is all that is left.