Spanish player of the vihuela. In 1538 he served Don Francisco de las Colvas, a friend of the Emperor Charles V, in Valladolid. From 1548 he served Prince Philip (later Philip II), taking charge of his choirboys and accompanying him on travels to Flanders, Italy and Germany. His collection of vihuela music Los seys libros (1538) contains the earliest surviving examples of variation writing, based on Gregorian melodies and Spanish romances, and includes arrangements of Franco-Flemish polyphony and smoothly contrapuntal fantasias modeled on the motet or organ ricercar.