Historical clue formulations

• Instruments in chamber groups — 2026-09-25
• Chamber group instruments — 2025-07-02
• Large stringed instruments — 2023-05-16
• Four-stringed instruments — 2021-07-18
• Relatives of violas — 2020-08-20
• Ma uses them — 2015-12-20
• Relatives of violas — 2015-04-06
• Parts of many chamber groups — 2014-04-18
• Stringed instruments — 2011-11-03
• They're straddled in pits — 2011-03-04
• They're part of the string section — 2008-03-05
• They're bowed — 2000-01-15
• Stringed instruments — 1995-03-02