Crossword Genius

Land of song and wails, we're told (5)

Ross

I believe the answer is:

wales

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'land' is the definition.
(Wales is an example)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for wales that I've seen before include "Cymru" , "International team" , "Home to Snowdonia and the Gower Peninsula" , "UK country" , "Part of Great Britain" .)

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