Historical clue formulations

• Half-spoken, half-sung passages of an opera — 2026-08-29
• Melodic opera passages — 2019-08-04
• Melodic passages — 2017-04-23
• Some opera passages — 2014-03-08
• Melodic passages — 2012-03-24
• Melodic passages — 2011-10-30
• Melodic passages — 2008-01-16
• Lyrical musical passages — 2007-02-01
• Melodic pieces — 2006-12-24
• Melodic pieces — 1998-11-08
• Some Bach compositions — 1998-01-25