Reed organ backing core of choir (6)
I believe the answer is:
oliver
'reed organ backing core of choir' is the definition.
I can't tell whether this defines the answer.
'organ backing core of choir' is the wordplay.
'organ' becomes 'liver' (liver is a kind of organ).
'backing' means one lot of letters go next to another.
'core of' indicates the central letters.
The middle of 'choir' is 'o'.
'liver' put after 'o' is 'OLIVER'.
Can you help me to learn more?
(Other definitions for oliver that I've seen before include "Dickens boy named Twist" , "Roland companion; Bath biscuit" , "A Cromwell, a Twist" , "Cook" , "* [DICKENS WORK] Untwisted" .)