Question: What is the name of this Victorian era theatrical partnership of a librettist and composer for which James Conroy-Ward is best known for performing its principal comic roles?
Sentence (from "Robert Reece"): He wrote many successful musical burlesques, comic operas, farces and adaptations from the French, including the English-language adaptation of the operetta "Les cloches de Corneville", which became the longest-running piece of musical theatre in history up to that time.
Relevant evidence: No