The article is better developed in style, structure and quality than Start-Class, but fails one or more of the criteria for B-Class. It may have some gaps or missing elements; need editing for clarity, balance or flow; or contain policy violations such as bias or original research.
C-class opera articles must include a moderately detailed plot synopsis that has sections which reflect the opera's structure and a roles table with the names of original performers. The article should cover the Background/history of composition, performance history, musical/textual analysis, critical appreciation, and recordings; topics which should be informative but not necessarily complete. The article should be referenced to multiple reliable sources but may lack in-line citations or appropriate notes. The article should include relevant external links, particularly to an online libretto. The article may lack illustrations and notable arias.