Solo over in Norway (4)

I believe the answer is:

oslo

'solo over in norway' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for oslo that I've seen before include "Former Christiania" , "Go solo to European capital" , "Location" , "Norway's capital city" , "Capital of Norway" .)

I've seen this clue in the Irish Times (Simplex) and The Irish Times.

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