Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.

[Q]: Who composed The Goldberg Variations?
[A]: bach


[Q]: Which 20th century composer wrote Fanfare for the Common Man?
[A]: aaron copland


[Q]: The songs It Ain't Necessarily So and Summertime are from which stage show?
[A]:
porgy and bess