Cyril's transposing songs (6)
I believe the answer is:
lyrics
'songs' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Maybe there's a link between them I don't understand?
'cyril's transposing' is the wordplay.
'transposing' indicates anagramming the letters (I've seen 'transposed' mean this).
'cyrils' anagrammed gives 'LYRICS'.
Can you help me to learn more?
(Other definitions for lyrics that I've seen before include "Words of a pop song" , "words to perform" , "Short song-like poems" , "words in numbers" , "Words used in songs" .)