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

Crossword clues for Aida or "Tosca":

ROLES: Tosca, Aida, et al.
OPERA: Tosca or "Aida"
OPERA: Aida or "Tosca"
ARIA: Solo from "Aida" or "Tosca"