Related Clues:

• Sebastian's twin, in "Twelfth Night"
• Sting, e.g.
• McCartney, for one
• It has four strings attached
• "Twelfth Night" twin
• Member of the strings
• Morey Amsterdam's instrument
• Instrument played sitting down
• Violin's kin
• It has a G-string
• Ma practices it
• Stradivarius e.g.
• It has four strings
• 'Twelfth Night' woman
• 'A table, a chair, a bowl of fruit and a ___; what else does a man need to be happy?': Albert Einstein