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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Nickname for a 63-Across 39-Down:

EROICA: Nickname for a 63-Across 39-Down
CHORAL: Nickname for a 63-Across 39-Down
PASTORAL: Nickname for a 63-Across 39-Down