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.

Q: Category: ART 
Clue: Medieval artists gave triangular ones to the trinity, round to the angels & rectangular to living holy people

A: halos
****
Q: Category: BEFORE, DURING & AFTER 
Clue: The "holy" first pope is in this '60s folk trio also including this actress who was "America's Sweetheart"

A: pope peter paul and mary pickford
****
Q: Category: MUSIC MEN 
Clue: "Rhapsody in Blue", a piece by this composer, was used as the title of a 1945 movie biography of him

A:
george gershwin
****