You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
--------
Question: Category: MOZART & FRIENDS 
Clue: Mozart wrote a lovely motet for Venanzio Rauzzini, one of these specially treated singers

Answer: a castrato


Question: Category: SINGERS 
Clue: She belted out "And I Am Telling You I'm Not Going" in "Dreamgirls" & turned it into a No. 1 R&B hit

Answer: jennifer holliday


Question: Category: THE ROCKIES 
Clue: In the film "Some Kind of Monster", drummer Lars Ulrich's dad tears one of this "Enter Sandman" band's songs to shreds

Answer:
metallica