“Forty years ago this Memorial Day weekend, “The Sound of Music” was not just the summer movie of 1965. It was the spring, fall and winter one, too, and in inflation-adjusted dollars, it remains the third-biggest-grossing film of all time at the domestic box office, according to Box Office Mojo. It hit the Billboard Top 40 video sales chart shortly after it became one of the first movies ever released on home video in 1979, and still holds the chart’s longevity record, of more than 300 weeks and counting.”