Historical clue formulations

• Singer Chesney — 2019-06-02
• Country singer Chesney — 2019-02-10
• G in jazz — 2018-01-26
• Country singer Chesney — 2010-05-23
• "South Park" parka wearer — 2010-05-01
• "South Park" boy — 2010-01-08
• "South Park" boy — 2009-07-28
• Often-killed "South Park" character — 2009-04-19
• Singer Rogers — 2003-07-21