The chalumeau—a single-reed woodwind instrument from the late baroque and early classical eras—is the predecessor of the modern clarinet. It has a cylindrical bore with eight tone holes and a broad mouthpiece with a separate reed made of cane. The chalumeau overblows a twelfth, similar to the clarinet. The instrument originated in France and spread to Germany in the 17th century. Renowned instrument maker J.C. Denner made improvements to the chalumeau eventually developing it into the Baroque clarinet.