W blows karaoke cover on W island (7)

I believe the answer is:

minorca

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'island' is the definition.
(I've seen this before)

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

(Other definitions for minorca that I've seen before include "Land in Balearics" , "One of Balearic islands" , "Mediterranean island" , "Balearic island (Eng. sp.)" , "Balearic island; O, cram in (anag.)" .)

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

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