The following two essays were written in 2003 for my students. The first is an introduction to Fernando Sor’s technique, and how if differs from that of Aguado. The second is concerned with an Introduction to the art of the improvised Prelude and Cadenza. Both essays require revision…maybe some day…but both still are (hopefully) useful introductions.
By Rob MacKillop
http://www.sorstudies.co.uk/essays.htm