Ready to play violin? Quit! (3,3)
I believe the answer is:
bow out
'quit' is the definition.
(I know that bow out is a more specific form of the action retire)
'ready to play violin?' is the wordplay.
'ready' becomes 'out' (I can't explain this - if you can you should give a lot more credence to this answer).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'play violin?' becomes 'bow'.
'out' after 'bow' is 'BOW OUT'.
Can you help me to learn more?
(Other definitions for bow out that I've seen before include "What a string player often gets" , "Withdraw from a situation" , "Retire from the scene with bodily gesture of acknowledgement?" , "Exit; retire" , "Retire gracefully" .)