Complex sentence: He further considered the idea of composing three one-act operas to be performed together, but found his publisher, Giulio Ricordi, firmly opposed to such a project, convinced that it would be expensive to cast and produce.
Split into simpler sentences: He further considered the idea of composing three one-act operas to be performed together. He found his publisher, Giulio Ricordi, firmly opposed to such a project, convinced that it would be expensive to cast and produce.