Worker maybe interrupting my choral director (6)
I believe the answer is:
cantor
'choral director' is the definition.
(thesaurus)
'worker maybe interrupting my' is the wordplay.
'worker maybe' becomes 'ant' (worker is a type of ant).
'interrupting' is an insertion indicator.
'my' becomes 'cor' (both are expressions of surprise).
'ant' placed into 'cor' is 'CANTOR'.
(Other definitions for cantor that I've seen before include "Synagogue prayer leader" , "Synagogue official who sings and leads prayer - contra (anag)" , "Carton (anag.)" , "leading chorister" , "Queen (in legal usage)" .)