Crossword Genius

Sister lost two sets producing some sonnets (7)

Ross

I believe the answer is:

sestets

I'm a little stuck... Click here to teach me more about this clue!

'some sonnets' is the definition.
The answer and definition can be both related to communication as well as being plural nouns.
Perhaps you can see an association between them that I can't see?

'sister lost two sets' is the wordplay.
'two sets' means two replacements for 'set'.
'sister' becomes 's' (this could be a standard abbreviation which I don't know about).
'lost' indicates an anagram.
'set'+'set'='setset'
'setset' with letters rearranged gives 'estets'.
's'+'estets'='SESTETS'

'producing' acts as a link.

Can you help me to learn more?

(Other definitions for sestets that I've seen before include "Poetry" , "Six performing together" .)

I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution? Install my app