Historical clue formulations

• "Mack the Knife" composer — 2017-03-21
• Kurt who wrote the music for "The Threepenny Opera" — 2012-05-08
• "Mack the Knife" composer — 2012-05-04
• "The Threepenny Opera" composer — 2011-02-09
• Composer Kurt — 2009-10-20
• "Mack the Knife" songwriter — 2008-12-28
• Brecht's sometime collaborator — 2005-03-06
• Brecht collaborator — 2004-08-01
• "Mack the Knife" composer — 2004-06-10
• Brecht collaborator Kurt — 2004-04-28
• "One Touch of Venus" composer — 2000-12-21
• Composer Kurt — 1994-12-12