 The first musical number in the film, "The Sound of Music", was the  final sequence shot in Europe before the cast and crew returned to  Los Angeles. It was filmed in late June and early July of 1964.  Despite the warm and sunny appearance, Julie Andrews (I) (qv)  notes that she was freezing running up that mountain over and over  again. Director Robert Wise (I) (qv) has said that he had to climb  one of the trees nearby to be able to overview the helicopter shoot  without getting in the picture.