As a music form progressed from simply a complement to dance, to a concrete compositional form that often had as much value as the dance that went along with it. The dance form, originating in France during the 17th century, began as a theatrical dance. It was not until the 19th century that ballet gained status as a "classical" form. In ballet, the terms 'classical' and 'romantic' are chronologically reversed from musical usage. Thus, the 19th century Classical period in ballet coincided with the 19th century Romantic era in music. Ballet music composers from the 17th-20th centuries, including the likes of Jean-Baptiste Lully, Pyotr Ilyich Tchaikovsky, Igor Stravinsky, and Sergei Prokofiev, were predominantly in France and Russia..