Feelings of conscience about key form of communication (7)
I believe the answer is:
remorse
'feelings of conscience' is the definition.
'remorse' can be an answer for 'conscience' (I have seen 'Guilty conscience ' mean 'remorse' so perhaps 'conscience' could also mean 'remorse'). I am unsure of the 'feelings of' bit.
'key form of communication' is the wordplay.
I cannot really see how this works, but
'key' could be 'e' (musical key) and 'e' is located in the answer.
'communication' could be 'morse' (morse is a kind of communication) and 'morse' is found in the answer.
A single letter 'r' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'about' acts as a link.
Can you help me to learn more?
(Other definitions for remorse that I've seen before include "Self-reproach" , "Pangs of conscience" , "Compunction" , "Sorrow for sin or wrong-doing" , "compassion" .)