Repeated part of song about ancient deity (6)
I believe the answer is:
chorus
'repeated part' is the definition.
(I've seen this in another clue)
'song about ancient deity' is the wordplay.
I cannot quite understand how this works, but
'about' could be 'c' (circa) and 'c' is located in the answer.
'deity' could be 'horus' (Horus is an example) and 'horus' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for chorus that I've seen before include "Band of singers and dancers" , "Pipe up in unison" , "Group of singers as in musicals" , "Section of song" , "Organized group of singers" .)