Historical clue formulations

• "Constant Craving" singer — 2012-04-10
• 1992 Grammy winner for "Constant Craving" — 2011-12-09
• 1988 Grammy winner for "Crying" — 2011-06-26
• "Shadowland" singer, 1988 — 2009-09-06
• Singer who spells her name in all lowercase letters — 2007-09-16
• Frequent duettist with Tony Bennett — 2005-04-26
• "Constant Craving" singer — 2000-04-28
• "Constant Craving" singer — 1997-04-19