Gustav Mahler would be my answer. Strauss was also composing during the late 19th and early 20th but Mahler created more of a fusion between the two.
Answer:
It's shortened for "Rhythms and Blues"
Explanation:
It was originated in the '40s when it replaced "race music" as a general marketing term for all African American music. Although, it was more referred to secular, and not religious.
The correct answer is Classical music.
The Burning of the Houses of Parliament