Historical clue formulations

• Name on the playbill for the 1936 Salzburg Festival — 2024-10-26
• Big name in family singers — 2024-01-04
• ___ Family Singers (group that inspired "The Sound of Music") — 2018-04-18
• "The Sound of Music" name — 2017-10-28
• Georg von ___ — 2013-11-09
• Von ___ family ("The Sound of Music" group) — 2012-11-26
• Austria's ___ Family Singers — 2011-02-08
• "The Sound of Music" family name — 2010-11-23
• "The Sound of Music" family name — 2009-01-28
• "The Sound of Music" name — 2008-09-04
• "The Sound of Music" name — 2007-03-25
• "The Sound of Music" name — 2006-11-05
• "The Sound of Music" name — 2005-04-08
• "The Sound of Music" name — 2000-12-01
• "The Sound of Music" name — 2000-10-08
• _____ Family Singers — 1994-04-24