Historical clue formulations

• "A Life for the Tsar" composer — 2008-05-14
• "A Life for the Czar" composer — 2001-05-20
• The Father of Russian Music — 2000-09-28
• "Russlan and Ludmilla" composer — 1998-04-18
• "Ivan Susanin" composer — 1996-02-25