West Side Story song for Anita, Rosalia and the Shark girls (7)

I believe the answer is:

america

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'west side story song' is the definition.
(I've seen this before)

I can't explain the remainder of the clue.

(Other definitions for america that I've seen before include "Curious camera I take to the continent" , "Continent of the Western Hemisphere" , "Camera I found in the continent" , "Country bordering Mexico" , "Federation" .)

I've seen this clue in The Times.

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