Possible Clues:

• Fiddle changing oil into claret?
• Sherlock Holmes' instrument
• Instrument held under the chin and played with a bow
• "The Four Seasons" solo instrument
• Fiddle mixing oil into French wine
• Stringed musical instrument made of wood
• Instrument uncovered evil gold ring
• Player such as Cowdrey getting six for a hundred
• Fiddle oil production in Bordeaux, for example, according to the French
• One's played Shakespearean heroine mostly at home