Historical clue formulations

• "U-S-A! U-S-A! …," e.g. — 2026-01-19
• Mantra — 2025-12-26
• Gregorian ___ — 2025-11-02
• "U.S.A.! U.S.A.!," e.g. — 2024-07-30
• "We will, we will ROCK YOU!," e.g. — 2024-05-05
• Gregorian song — 2024-04-28
• Feature of many a sit-in — 2022-11-16
• Mantra, often — 2022-09-07
• Something "U.S.A." may be part of — 2022-07-02
• "U.S.A.! U.S.A.!," e.g. — 2021-12-28
• "De-fense! De-fense!," e.g. — 2015-08-15
• Sound in a lamasery — 2014-12-30
• "U.S.A.! U.S.A.! U.S.A.!," e.g. — 2014-12-01
• Sound from a monastery — 2009-09-02
• "2, 4, 6, 8 — who do we appreciate?," e.g. — 2008-07-22
• Gregorian music style — 2004-06-14
• Monastery sound — 2003-01-12
• Rooters' refrain — 2002-07-22
• Sound from a coven — 2002-03-28
• Words from a crowd — 2002-02-09
• Sound from a monastery, maybe — 2001-07-08
• Noise at a street protest — 2000-06-26
• Canticle — 1999-03-25
• Strikers' commotion — 1998-03-06
• Stadium sound — 1996-04-21
• Liturgical music — 1994-06-19
• Music of the Benedictine monks — 1994-05-12