Heard '70s musical in this country (6)

I believe the answer is:

greece

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'this country' is the definition.
(Greece is a European country)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for greece that I've seen before include "Republic whose mythology is widely known" , "Country of southeast Europe" , "Zorba's land" , "Country of Sophocles and Aristotle" , "European state" .)

I've seen this clue in the Sydney Morning Herald.

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