Answer: As the middle class grew, people became more interested in music as entertainment. Fortunately the availability of music and musical theory was more prevalent because of the invention of the printing press (Gutenberg). The arguably biggest change was the increased popularity of what is now known as polyphony.
Explanation:
Hope this helps^^
One of them is definitely Sigmund Freud, he is the central person in the psychoanalytic dream interpretation. The other is his Swiss student, Carl Jung.
Alfred Adler respected and acknowledge the work on dream but he himself rather focused on the inferiority complex.
