William Ripley Dorr
William Ripley Dorr was an American music conductor who organized the St. Luke's Episcopal Church Choristers in 1930 in Long Beach, California, USA. The choir appeared or audio performed in dozens of Hollywood films from 1935 to 1951.
Cast

The Prince and the Pauper
Choir (as St. Luke's Choristers)

Mrs. Miniver
Choir (uncredited)

A Christmas Carol
Singers of 'Adeste Fideles' (uncredited)

Random Harvest
Church Singers (uncredited)

A Tale of Two Cities
Background Singers (uncredited)

San Francisco
Choir (uncredited)

The Great Caruso
Vocal Ensemble (uncredited)

Babes on Broadway
Church Choir (uncredited)