Historical clue formulations

• Section of "Aida," e.g. — 2016-08-28
• La Scala segment — 2014-11-16
• Extended operatic solo — 2009-07-05
• Elaborate solo vocal composition — 2009-02-28
• Operatic vocal solo — 2006-09-28
• Long operatic solo — 2003-07-13
• Extended opera solo — 2001-07-07
• Extended operatic solo — 1999-02-26