Historical clue formulations

• Melancholy — 2020-01-08
• "Man of Constant ___" (old folk standard) — 2007-12-21
• Regret — 2005-11-06
• Blue feeling — 2005-09-20
• Joy's opposite — 2001-02-05
• What's sweet about parting — 1994-08-31
• Juliet's was "sweet" — 1994-06-15