Ballet 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–19th centuries, including the likes of Jean-Baptiste Lully and Pyotr Ilyich Tchaikovsky, were predominantly in France and Russia. Yet with the increased international notoriety seen in Tchaikovsky’s lifetime, ballet music composition and ballet in general spread across the western world.
Until about the second half of the 19th century the role of music in ballet was secondary, with the main emphasis on dance, while music was simply a compilation of danceable tunes. Writing "ballet music" used to be a job for musical craftsmen, rather than for masters. For example, critics of the Russian composer Pyotr Ilyich Tchaikovsky mentioned his writing of ballet music as something demeaning.
From the earliest ballets up to the time of Jean-Baptiste Lully (1632–1687), the music of ballet was indistinguishable from ballroom dance music. Lully created a style that was separate, wherein the music told a story. The first "ballet d'action" was staged in 1717. This was a story told without any words. The pioneer was John Weaver (1673–1760). Both Lully and Jean-Philippe Rameau wrote opéra-ballets, where the story was partly danced and partly sung, but ballet music became gradually less important.
The next big step occurred in the early years of the nineteenth century, when principal dancers changed from using hard shoes to ballet pumps. This enabled a more free-flowing style of music to be used. Marie Taglioni (1804–1884) is credited with being the first ballerina to dance en pointe in La Sylphide in 1832. It was now possible to have music that was more expressive. Gradually, dancing became more daring, with men lifting the ballerinas into the air.
Until the time of Tchaikovsky, the composer of ballets was considered to be separate from the composer of symphonies. Ballet music was an accompaniment for the solo and ensemble dances. Tchaikovsky's Swan Lake was the first musical ballet piece to be created by a symphonic composer. Following the initiative of Tchaikovsky, ballet composers were no longer writing simple, easily danceable pieces. The focus of a ballet was no longer solely the dance; the compositions behind the dances began to take an equal prevalence. In the late 19th century, Marius Petipa, French ballet choreographer and dancer, worked with composers such as Cesare Pugni to create ballet masterpieces that boasted both complex dance and complex music. Petipa worked with Tchaikovsky as well, whether through collaboration with Tchaikovsky on his work The Sleeping Beauty and The Nutcracker, or indirectly through revision of Tchaikovsky's Swan Lake after the composer’s death.