"The creative worth of Sor's guitar sonatas is high. The ideas, which grow out of the instrument yet stand up well enough apart from it, are fresh and distinctive. The harmony is skillful and surprisingly varied, with bold key changes and with rich modulations in the development sections. The texture is naturally of interest too, with the melody shifted from top to bottom, to middle, and frequent contrapuntal bits added. Among the extended forms, the first Allegro movements still show considerable flexibility in the application of 'sonata form', especially in the larger number of ideas introduced and recalled. For that matter, the style still goes back to that of Joseph Haydn and Mozart, especially in the first movement of Op. 22, which has all the neatness of syntax and accompaniment to be found in a classic symphony, and its third and fourth movements, which could nicely pass as a Minuet and Rondo by Haydn."