Historical clue formulations

• Bach work — 2008-01-08
• Many a hymn — 2003-11-16
• "A Mighty Fortress Is Our God," e.g. — 2001-01-20
• Bach piece — 2000-12-09
• Bach work — 1999-05-07
• Bach piece — 1999-02-06
• Lutheran hymn — 1997-04-25
• Bach work — 1995-06-13
• Beethoven's Ninth — 1994-04-24