Historical clue formulations

• "Sealed With ___" — 2020-08-18
• Half of S.W.A.K. — 2016-02-16
• "Sealed With ___" — 2011-03-30
• Part of S.W.A.K. — 2010-01-12
• Words sung before and after "is just" — 2008-02-10
• Words after "You must remember this" — 1997-07-26