BBC Two last night aired 'Climbed Every Mountain', a tribute to The Sound of Music, presented by Sue Perkins.
The Sound of Music is one of the most enduringly popular films ever made, yet behind it lies an even more astonishing family story.
Perkins travelled to Salzburg, Ellis Island and Vermont to discover how the family made a living in America as the Trapp Family Singers - and found that they eventually bought an estate in Vermont which looked uncannily like their homeland.
The programme also argued that the ultimate feel good story has dark undertones and is disliked by Austrians; and talked about the first ever performance of the musical in Salzburg itself.
UK viewers can see the programme on BBC iPlayer for the next week.
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