Related Clues:

• Picker's accessory
• Guitar clamp
• Aria da ___
• Banjo accessory
• Mob kingpin
• Pitching device?
• String shortener
• Enforcer
• Crime bigwig or guitar attachment
• Omertà keeper
• It can change one's tune
• Mafia title
• Guitarist's device
• Head of a family
• Crime syndicate head