Historical clue formulations

• Baroque stringed instruments — 2018-11-13
• Early strings — 2017-02-09
• They had C-shaped sound holes — 2009-11-06
• Instruments played with bows — 2007-06-12
• Six-stringed instruments — 2006-05-15
• Early strings — 2002-01-30
• Early fiddles — 1999-10-21
• Some strings — 1996-12-04