Historical clue formulations

• Ballet or bourrée, in Bourgogne — 2025-12-28
• Ballet, e.g., in French — 2022-10-03
• Activity at un bal masqué — 2019-08-16
• Matisse's "La ___" — 2019-01-17
• Étoile's element — 2008-08-09
• Étoile's field — 2006-09-29
• "La classe de ___" (Degas work) — 2006-04-09
• Segment from "The Nutcracker" — 2005-05-21
• Matisse's "La ___" — 2002-01-24
• "La _____ des Nymphes" (Corot painting) — 1994-05-28