Sor’s first sonata for the guitar [op. 14] (later known as “Grand Solo”) is justly famous today as a grandiose imaginative work, using the resources of the instrument to the full and moving sometimes into remote keys. It certainly dates from Sor’s Spanish period. As a one-movement sonata, it has affinities with the keyboard works of Scarlatti and of Soler. It may very well be the same piece that Sor played in a concert in Barcelona on 7 May 1802.
You can see and hear it on Youtube played by Petrit Çeku here.
It was first published in Paris in 1810 or shortly before without opus number, and then in Paris in about 1822. In this edition I give both versions.
This edition comes from the new 2020 second edition of Sor’s New Complete Works for Guitar edited by Brian Jeffery. The Introduction and Index to the entire series can be seen here on this site.