Movies
By 1929 the Tin Pan Alley industry was ailing, was free music on the Radio contributing to the demise? Or was it the movies?!
The Hollywood studios were buying up the publishing houses. Warner Bros purchased Witmark, Harms and Remick. MGM bought out Leo Feist and Robbins Music. Paramount had the Spear and Coslow catalogue.
New publications were mainly songs from the films not freelance pop.