Classic question answered six times in this puzzle

Question:

Answer:

WHATISART

Length:

Similar Crossword Questions:

1993 dance hit, and a question answered seven times in this puzzle
Cult classic whose title is depicted four times in this puzzle
Word hidden four times in this puzzle
"Classic Concentration" puzzle type
New Year's tune transposed nine times in this puzzle
TV show whose working title was "Please Stand By" (and what you'll have to cross 18 times when solving this puzzle)
Bettor's question, and a hint to this puzzle's theme
Three times, a classic Three Stooges line
Classic schoolyard activity, and theme of this puzzle
February 22 honoree whose name is rearranged seven times in this puzzle
Puzzle theme which appears nine more times in the grid
Speaker's challenge scrambled three times in this puzzle
Question asked 12 times in Matthew
Perjure oneself ... or what can be found six times in this puzzle
Question of concern ... or another title for this puzzle
First of a pair of letters swapped six times in this puzzle's theme entries
Classic children's novel, and what to look for in this puzzle's three other longest answers
Lowercase letter illustrated six times in this puzzle?
Apt question concerning 10 answers in this puzzle
"I'll take 'The New York Times Crossword Puzzle' for $200, ___"
___ accent, mark used symmetrically six times in this puzzle's solution
Buffoon in modern-day slang, and word hidden five times in this puzzle
Second of a pair of letters swapped six times in this puzzle's theme entries
Question that Mao Zedong answered with a yes?
Classic 1911 children's novel ... with a hint to this puzzle's theme