And his conception of an "unending melody," an unbroken flow of music intended to give cohesion and homogeneity to his music-dramas, was a direct consequence of the efforts of Mozart and Weber to give unity to their operatic works. For although these composers retained the old convention of an opera composed of separate numbers, they nevertheless managed to unify their operas by creating a distinct style in each of them, and by securing an emotional development in the various arias and concerted numbers. The step from "Don Giovanni" and "Euryanthe" to "Tannhaeuser" and "Lohengrin" does not seem quite as long a one to-day as once it did. Indeed, there are moments when one wonders whether "Lohengrin" is really a step beyond "Euryanthe," and whether the increase of power and vividness and imagination has not been made at the expense of style. Moreover, in much of what is actually progress in Wagner the influence of Weber is clearly discernible. The sinister passages seem but developments of moments in "Der Freischuetz"; the grand melodic style, the romantic orchestra with its sighing horns and chivalry and flourishes, seem to come directly out of "Euryanthe"; the orchestral scene-painting from the sunrise and other original effects in "Oberon." Even Meyerbeer taught Wagner something more than the use of certain instruments, the bass-clarinet, for instance. The old operatic speculator indubitably was responsible for Wagner's grand demands upon the scene-painter and the stage-carpenter. His pompous spectacles fired the younger man not only with "Rienzi." They indubitably gave him the courage to create an operatic art that celebrated the new gold and power and magnificence, and was Grand Opera indeed. If the works of the one were sham, and those of the other poetry, it was only that Wagner realized what the other sought vainly all his life to attain, and was prevented by the stock-broker within.