Historical clue formulations

• "___ and Fugue in D Minor" (piece used in "Fantasia") — 2021-10-17
• Bach work — 2014-07-23
• Organ showpiece — 2013-12-13
• Many a Bach composition — 2013-04-28
• Improvisatory piece of classical music — 2010-05-30
• Improvisatory composition — 2008-09-06
• Fantasia's cousin — 2004-07-24
• Fugue preceder, often — 2001-07-15
• Improvisationlike composition — 2000-11-10
• Improvisational composition — 2000-09-20