Two newspapers with good quality info on music (4,9)
I believe the answer is:
time signature
'info on music' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'two newspapers with good quality' is the wordplay.
I cannot quite understand how this works, but
'good' could be 'g' (abbreviation) and 'g' is located in the answer.
'quality' could be 'nature' (nature is a kind of quality) and 'nature' is found within the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for time signature that I've seen before include "Indicator on score of musical rhythm" , "Mark before the first bar?" , "guide for players" , "Musical notation - intimate urges (anag)" , "Indication of musical rhythm" .)