Theatre in capital brought back Mikado (7)
I believe the answer is:
emperor
'mikado' is the definition.
The answer and definition can be both people as well as being singular nouns.
Perhaps you can see a link between them that I can't see?
'theatre in capital brought back' is the wordplay.
'theatre' becomes 'rep' (repertory theatre).
'in' indicates putting letters inside.
'capital' becomes 'rome' (capital of Italy).
'brought back' shows that the letters should be reversed in order.
'rep' placed into 'rome' is 'rorepme'.
'rorepme' in reverse letter order is 'EMPEROR'.
Can you help me to learn more?
(Other definitions for emperor that I've seen before include "Penguin of largest known species - a great ruler" , "chap such as Charlemagne" , "Sovereign and richly-colored butterfly" , "Eg, Caesar" , "Absolute ruler" .)