Comédie-ballet is a genre of French drama which mixes a spoken play with interludes containing music and dance.
Dictionary Very good discussion about Moliere and his comedies-ballets (translated from French).
The Literary Encyclopedia Outstanding (archived) article on Moliere and his comedie-ballet.
Theatre History.com Biography of French playwright and inventor of comedie-ballet Jean Baptiste Moliere.
University of Toronto Excellent description of Moliere’s comedie-ballets in a historical context, with details of all of the playwright’s works of this genre.
Wikipedia Biography of French composer Jean Baptiste Lully, with whom Moliere collaborated on his comedies-ballets.