Fernando Sor was born in 1778, and passed away in 1839. A Spanish classical guitarist who has revolutionized the instrument.

Sor, a classical guitar master, demonstrated his vigorous talents in one of his most appreciated works - The Twenty studies for the guitar. These 20 studies can be performed to develop motion and strength throughout the guitarist's fingers, as well as a strong sense of appreciation of his works.

Unfortunately, the guitar has not been played as much as other instruments which won public admiration in concert halls. It had but a few Masters who could contribute more wealth to the achievements of their predecessors; but a few students who devoted themselves with loving patience to the study of pedagogical experiements of the old as well as the new Masters.

The 20 studies varies with incrementing difficulty levels, and can be considered a complete classical guitarist's study.