Historical clue formulations

• Classic Beethoven piano piece — 2026-08-18
• Classical piece said to be the inspiration for Chopin's "Fantaisie-Impromptu" — 2026-05-22
• Classic work by 45-, 35- and 28-Down, so to speak? — 2018-04-11
• Masterpiece designated "quasi una fantasia" — 2015-01-10
• Beloved "Immortal Beloved" piece — 2012-03-02
• Piano classic in C sharp minor — 2006-06-16
• Music to ease the second-job blues? — 1997-02-01
• Beethoven opus in C-sharp minor — 1995-08-29
• Beethoven classic — 1994-10-24