In many ways, this shift mirrored the German idea of ("music for use"), as composers sought to create music that could serve a utilitarian as well as artistic purpose. This approach encompassed two trends: first, music that students could easily learn, and second, music which would have wider appeal, such as incidental music for plays, movies, radio, etc. Toward this end, Copland provided musical advice and inspiration to The Group Theatre, a company which also attracted Stella Adler, Elia Kazan and Lee Strasberg. Philosophically an outgrowth of Stieglitz and his ideals, the Group focused on socially relevant plays by the American authors. Through it and later his work in film, Copland met several major American playwrights, including Thornton Wilder, William Inge, Arthur Miller, and Edward Albee, and considered projects with all of them.