Jaw about the composer's work with Frederic (6)
I believe the answer is:
chopin
'frederic' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's a link between them I don't understand?
'jaw about the composer's work' is the wordplay.
'jaw' becomes 'chin' (I have seen 'Lower jaw' mean 'chin' so perhaps 'jaw' could also mean 'chin').
'about' is an insertion indicator.
'the composer's work' becomes 'op' (I can't justify this - if you can you should believe this answer much more).
'chin' enclosing 'op' is 'CHOPIN'.
'with' is the link.
Can you help me to learn more?
(Other definitions for chopin that I've seen before include "Writer of music" , "Polish pianist-composer" , "Polish composer and pianist, d. 1849" , "Great Polish composer of phonic kind" , "Frederic ......, 19th century Polish composer, mostly for piano" .)