Percussive contrapuntal piece (3)
I believe the answer is:
rap
'percussive contrapuntal piece' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe there's an association between them I don't understand?
'percussive contrapuntal piece' is the wordplay.
'piece' indicates the answer is hidden within the clue.
'RAP' is hidden within 'percussive contrapuntal'.
Can you help me to learn more?
(Other definitions for rap that I've seen before include "talking during musical performance" , "Strike; music genre" , "Knock for par" , "Knock; type of rhythmical speech to music" , "black music is a > blow" .)