Historical clue formulations

• Doesn't let a peep out of — 2023-09-15
• Quiets down — 2021-06-02
• Sounds off? — 2012-07-13
• Stills — 2007-12-01
• Stunned crowd reactions — 2006-04-20
• Calms — 2005-06-18
• Silences — 2004-07-18
• Quiets — 1998-03-14
• Covers (up) — 1997-03-01
• Sudden silences — 1995-05-07