Sound that's repeated in the chorus (4)
I believe the answer is:
echo
'sound' is the definition.
(I know that echo is a type of noise)
'in the chorus' is the wordplay.
'in' indicates a hidden word.
'ECHO' is hidden in the letters of 'the chorus'.
'that's repeated' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for echo that I've seen before include "Noise heard again" , "Repetition by reflection" , "Rebounding sound" , "Reproduction" , "Trace call" .)