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

Crossword clues for Some Alpine singers:

YODELTACO: Tex-Mex snack that improves the performance of an Alpine singer?
YODELER: Alpine singer, perhaps
YODELER: Alpine singer
YODELERS: Some Alpine singers
YODELERS: Alpine singers