I think it’s Participial phrase
because participial phrases have past tense or present words, and in this question it has the word “had” and “hoped” and those are both past tense.
Sorry if I am wrong but i think it just seems like that’s what it could be.
1:Violin
2:Viola
3:Cello
4:Double bass
The future or something that happened to them
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.