What were Haydn's most important contributions to vocal music?

A(n) ________ is a form that includes a series of pieces for singers, choruses and

orchestra and tells a story.

Fill in the blank(s) with the appropriate word(s).

Which one of the following best describes the type of song heard in this excerpt?  

A. English translation of an Italian opera aria B. anti-slavery song C. post-minstrel humorous song D. an early protest song