Historical clue formulations

• Country singer Crystal — 2021-08-28
• ___ King, morning TV personality — 2019-11-25
• Newswoman King — 2019-11-12
• King of morning TV — 2019-02-03
• King on "CBS This Morning" — 2018-03-05
• King who's a friend of Oprah — 2016-09-25
• Oprah's BFF — 2016-08-21
• "Talking in Your Sleep" singer — 2002-12-08
• Singer Crystal — 2000-08-24
• Country crooner Crystal — 1998-01-22
• Country singer Crystal — 1997-09-22
• Singer Crystal — 1997-08-19
• Singer Crystal — 1996-12-02
• "Don't It Make My Brown Eyes Blue" singer — 1994-08-13