Sound on film.
"There is an easy, effortless quality about Backyard Horizons, by Roy C. Wilcox, which tends to belie the fine competence of its work with telephoto lenses and extension tubes. The birds, bugs, bees and rabbits which parade across the horizon of the Wilcox pastures seem to be friends of the family — and they are treated as such in the unpretentious narrative which accompanies them. The sound on film track, combining simple musical selections and a restrained volume of comment, was itself produced by Mr. Wilcox, and it records his own voice, pleasingly." Movie Makers, Dec. 1946, 486, 488.
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