Fernando Sor was a Spanish classical guitarist and composer of the late Classical era and early Romantic era. Best known for writing solo classical guitar music, he also composed an opera, three symphonies, guitar duos, piano music, songs, a Mass, and at least two successful ballets: Cinderella, which received over one hundred performances, and Hercule et Omphale.

The classical guitar, also called modern classical guitar, is a member of the guitar family used in classical music and other styles. An acoustic wooden string instrument with strings made of gut or nylon, it is a precursor of the modern steel-string acoustic and electric guitars, both of which use metal strings. Classical guitars derive from instruments such as the lute, the vihuela, the gittern, which evolved into the Renaissance guitar and into the 17th and 18th-century baroque guitar. By the mid-19th century, early forms of the modern classical guitar appear. Today's modern classical guitar was established by the late designs of the 19th-century Spanish luthier, Antonio Torres Jurado.