discovered and  improved by a French company (using a gramophone) in 1910. In 1913  Thomas A. Edison announced that all the problems of sound films were  solved, and showed what he called, "the first sound film." As in the  earlier efforts, Nursery Favorites (1913) had a gramophone that  appeared to synchronize with the film. There was one problem: the  film was projected at the wrong speed, and the soundtrack was slowed  down inadvertently. This problem happened all too often, and a  frustrated Edison abandoned his process. In 1921, D.W. Griffith  employed various experts to film a sound introduction for his film  Dream Street (1921), which still exists, and went the performance  went off without a hitch. Griffith soon stopped using sound because  he thought it was financial suicide, stating "Only 5% of the world  speaks English, so why should I lose 95% of my audience?" However by  1925 sound had arrived in the form of radio, and it was inevitable  that film would follow. Movie studios tried various innovations to  keep audiences coming (Technicolor, wide screen etc.) Warner  Brothers, then a lesser film company, bought the old Brooklyn