Historical clue formulations

• Helen who sang "I Am Woman" — 2021-09-29
• Helen with the 1972 #1 hit "I Am Woman" — 2020-08-21
• "I Am Woman" singer — 2014-08-14
• Helen who sang "I Am Woman" — 2009-08-17
• Helen who sang "Angie Baby" — 2007-03-07
• "I Am Woman" singer, 1972 — 2004-11-14
• "Angie Baby" singer, 1974 — 2004-06-19
• "Angie Baby" singer — 2000-05-27
• Singer Helen — 1994-08-17