For a violinist, very much like voiced end parts (5)
I believe the answer is:
assai
'for a violinist very' is the definition.
I can't judge whether this definition defines the answer.
'much like voiced end parts' is the wordplay.
'much' means to remove the last letter (much but not all of the word).
'like' becomes 'as if' (I've seen this in another clue).
'voiced end' becomes 'sa' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'parts' is an insertion indicator (in the sense of cuts or separates).
'asif' with its last letter taken off is 'asi'.
'asi' going around 'sa' is 'ASSAI'.
Can you help me to learn more?
(Other definitions for assai that I've seen before include "Very (mus.)" , "Italian greatly contributed to score" , "Very (in music scores)" , ""Very" as musical instruction" , "Produced offspring" .)