On 10th December, 1553, at one of the highpoints in the Golden Age of Spanish music, there appeared in Rome the TRATTADO DE GLOSAS SOBRE CLAUSULAS Y OTROS GENEROS DE PUNTOS EN LA MUSICA DE VIOLONES NUEVAMENTE PUESTOS EN LUZ by Diego Ortiz, who was also known under the name “el Toledano”. An inevitable reference point for the study of instrumental performance practice in the 16th century, this work is of exceptional interest, both for its purely historical significance and for its artistic value, since it contains the finest examples of the known repertoire for viola da gamba (vihuela de arco or violone) and harpsichord in the Renaissance period.