Sonata en La (Thomas Schmitt, guitarra de 6 órdenes)
"Sonata en La" (ca.1776) de Juan Antonio de Vargas y Guzmán
Played on a 6-course guitar (after Lorenzo Alonso, 1797) by Carlos Gass.
For more information visit:
(1) http://thomasschmitt.wordpress.com/
(2) http://www.lamadeguido.com/nov_.html