Manual worker producing notes in church? (8)
I believe the answer is:
organist
'manual worker' is the definition.
(musician working with their hands)
'notes in church?' is the wordplay.
I cannot quite understand how this works, but
'notes' could be 'ga' (two musical notes) and 'ga' is found within the answer.
This explanation may well be incorrect...
'producing' is the link.
Can you help me to learn more?
(Other definitions for organist that I've seen before include "It groans for church musician" , "Accompanist, keyboard player" , "Roasting (anag)" , "Church instr. player" , "Cathedral musician" .)