Historical clue formulations

• Extemporize to fill time, say — 2026-03-31
• Improvise, in jazz — 2026-02-16
• Siren — 2022-11-09
• Improvise, in jazz — 2020-02-04
• Femme fatale — 2018-08-13
• Temptress — 2015-06-02
• Improvise musically — 2014-07-29
• Siren — 2013-07-02
• Seductress — 2010-07-04
• Seductress — 2007-11-18
• Improvise — 2007-10-14
• Seductress — 2004-09-13
• Improvise — 2004-04-01
• "Hard Hearted Hannah" of song — 2004-01-24
• Man trapper — 2002-06-25
• Fill in time on stage — 2000-09-20
• Theda Bara, e.g. — 1998-03-11
• Improvise — 1997-01-30
• Improvise — 1996-10-04
• Siren — 1995-07-09
• Seductress — 1994-11-27