We would have the sound of a bell at this service (7)
I believe the answer is:
wedding
'a bell at this service' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'we would have the sound' is the wordplay.
'would have' becomes 'd' (I've seen this in other clues).
'the sound' becomes 'ding' (I've seen this before).
'we'+'d'+'ding'='WEDDING'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for wedding that I've seen before include "Nuptial ceremony" , "Marriage ceremony" , "Audience for the 13 14" , "following 28 [SILVER]" , "Celebration of marriage" .)