Historical clue formulations

• Instrument strummed in the Train song "Hey, Soul Sister" — 2024-09-22
• Marilyn Monroe played one in "Some Like It Hot" — 2019-09-06
• Popular Jazz Age instrument — 2017-08-30
• It's played close to the chest — 2015-04-03
• Part of some Tin Pan Alley music — 2012-01-08
• Luau instrument — 2011-09-06
• A musician might pick it — 2008-04-12
• It may accompany hip-shaking — 2003-09-06
• Tiny Tim's instrument — 2001-05-01
• Arthur Godfrey played it — 1999-07-22
• Tiny Tim's instrument — 1997-11-18
• Four-stringed instrument — 1997-06-07