The Spanish guitarist Fernando Sor (1778-1839) undoubtedly is one of the most important composers for the classical guitar. Today, his works are an integral part of the repertoire of every classical guitarist and perfect for guitar lessons. 'Fantaisie' Op. 12 (1821/22) is of the then very popular type 'Theme and variations'. In contrast to most guitar compositions of his time, Sor often used a third or sometimes even fourth part. The polyphonic setting runs through the theme and the seven variations so that the composition is recommendable particularly to somewhat advanced players.