Complex sentence: He also made his living as a music arranger and orchestrator for composers including Robert Planquette and wroting songs for the stars of the era: "Le Chemin des noisettes" or "La Pigeonne".
Split into simpler sentences: He also made his living as a music arranger and orchestrator for some of his colleagues, including Robert Planquette. He wrote songs for the stars of the era: "Le Chemin des noisettes" or "La Pigeonne".