Colas Breugnon (Russian: Кола Брюньон, Kola Bryun'on) is a Russian-language opera in three acts by Dmitry Kabalevsky, also known as The Master-Craftsman of Clamecy (Мастер из Кламси; Master iz Clamsy) op. 24 in Russia. The libretto by V. Bragin is based on Romain Rolland's novel about a fictional Burgundian optimist named Colas Breugnon set in 16th-century Clamecy, Nièvre. The opera premiered under the direction of Samosud in Leningrad in 1938.[1] The opera is best known for its "rollicking" overture.[2]