Deanna Durbin and the Vienna Boys Choir (Wiener Sängerknaben) perform the Bach - Gounod setting of Ave Maria. This performance was filmed in the fall of 1937, when Durbin was 15 years old. The movie it is taken from is "Mad About Music". Thanks for dholl17 for pointing out that the boys choir you see is the St. Luke's Choristers from Long Beach, CA. However they are just mouthing the words that Deanna Durbin and the Vienna Boys Choir had already recorded. *Note - this is the second version I ...