%26t 3D1425337355000%26v%3 D2%26positionVo3D0%26chi na_variant%30False&utm_medi um=10today.0302&position=0 &part=sl&china_variant=False> bbc.com / Louise Hidalgo When it was released 50 years ago, The Sound of Music became one of the most successful films of all time. It was based on the true story of the von