After the death of his paternal grandfather, Maximilian, in 1519, Charles also inherited the Habsburg lands in Austria, and later went on to become Emperor of the Holy Roman Empire and one of the most powerful monarchs in the world.
In 1538, Cabezón was made músico de la cámara (chamber musician) to Charles (who as a child was educated in music by the noted organist Henry Bredemers).
However, the bulk of his compositions was published posthumously by his son Hernando in a volume titled Obras de música para tecla, arpa y vihuela (Madrid, 1578).
[2] A good keyboard improviser, many works by Antonio de Cabezón transcribed by his son Hernando were "mere crumbs from my father's table".
[3] While French and Italian organists of the time frequently composed organ masses, in Spain this practice was limited to versos on the Kyrie.
These fall into the following groups: Cabezón's music for the Daily Offices comprises 32 hymns and three collections of versets for the psalms and for the Magnificats: The tiento was a polyphonic form of instrumental music that originated in the Iberian peninsula, and has been linked to both tastar de corde (an improvisatory prelude) and the ricercar (an improvisatory prelude or, at a later stage of development, a strict imitative composition).
Fourteen appeared in Libro de cifra nueva: these works are all written out in long note values, alternating between imitative counterpoint and non-imitative sections.
The non-imitative parts frequently employ techniques unusual for the genre at the time: extended duets, motifs transforming into ostinato patterns.
[2] The intabulations in Obras de música are ordered according to polyphonic complexity, starting with the simpler four-part pieces and culminating with six-part ones.