Gonzalo de Berceo - Mester de Clerecía

[youtube http://www.youtube.com/watch?v=2Kl4CyoMuGA?rel=0]

[youtube http://www.youtube.com/watch?v=IEnxBZgUVSA?rel=0]

[youtube http://www.youtube.com/watch?v=lVjlS046Jek?rel=0]