Sandwich with a good filling for virtuoso (8)
I believe the answer is:
paganini
'virtuoso' is the definition.
Both the definition and answer are singular nouns.
Perhaps they are linked in a way I don't understand?
'sandwich with a good filling' is the wordplay.
'sandwich with' becomes 'panini' (I can't explain this - if you can you should believe this answer much more).
'good' becomes 'g' (abbreviation).
'filling' means one lot of letters goes inside another.
'a'+'g'='ag'
'panini' enclosing 'ag' is 'PAGANINI'.
'for' is the link.
Can you help me to learn more?
(Other definitions for paganini that I've seen before include "Italian barman" , "Violinist and composer" , "Niccolo _; Italian composer" , "Famous Italian violinist" , "Niccolo --, Italian violinist" .)