У вашего броузера проблема в совместимости с HTML5
This is a first in a series where I hope to practice and record each study in Dionisio Aguado's "Metodo de Guitarra", one per day, until I have completed Parts 1, 2, and 3. No reason, really, other than to create some personal motivation to practice these studies again and improve my technique. (Constructive?) Criticism and comments are welcome.