Hi, GMC! Fernando Sor is one of the most important classical guitarist / composer from 18th-19th Century. Besides many concert pieces, he has written numerous studies.
The legendary Spanish guitar master from Spain, Andres Segovia, has chosen 20 of Sorfs studies and they became a standard for serious classical guitar students.
This is the most famous study by Sor. This beautiful piece of music will provide an excellent arpeggio practice.