Those people fuss about central pair of oiks in operetta (3,6)
I believe the answer is:
the mikado
'operetta' is the definition.
(I've seen this before)
'those people fuss about central pair of oiks' is the wordplay.
I cannot quite understand how this works, but
'those' could be 'them' and 'them' is present in the answer.
'fuss' could be 'ado' (synonyms) and 'ado' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for the mikado that I've seen before include "musical drama" , "G & S operetta" , "Musical work" , "comic opera" , "Eighteen eighty five G&S operetta" .)