What instrument became popular with the New Romantics?

What was Hugo Riemann's contribution to the study of music? a. Insisted that all music students must pass a keyboard proficiencyrequirement

b. Instituted the study of musicology. c. Developed a simple way of discussing functional harmony. d. Developed the concept of publishing complete works editions for pastmaster composers.

Explain what is meant by the term “cardinal 4 set.”

What will be an ideal response?