The manuscript of "Sonatas para clavicordio" is preserved in the Biblioteca Nazionale Marciana of Venecia. It is believed that Farinelli carried this sonatas to Italy with other Sacarlatti's sonatas. It contains 30 sonatas divided in two symmetrical groups of 14 bipartite sonatas and a fugue. The "clavicordio" was the spanish word used to design the harpsichord. The clavichord was known as "monacordio".

Sebastián Albero was born in Roncal (Navarra) in 1722. He was organist of the Royal Chapel...