Stanza from Petrarch or a Lesbos hymn (7)
I believe the answer is:
chorale
'stanza' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'from petrarch or a lesbos hymn' is the wordplay.
'from' indicates the answer is hidden within the clue.
'CHORALE' can be found hidden inside 'petrarch or a lesbos hymn'.
Can you help me to learn more?
(Other definitions for chorale that I've seen before include "Psalm or hymn tune" , "hymn setting" , "vocal music" , "Harmonised hymn tune" , "Composition" .)