Jean Guyot, also known as Castileti, was one of the most important figures in Liège during the 16th century. His compositions are characterized by a distinctive style and reflect the various stages of his career. His exact birthdate is uncertain, as are any possible stays in France or Italy.
Guyot was born into a wealthy family in Châtelet and was an integral part of his hometown's cultural life from childhood. Although the details of his early schooling are unknown, he began his studies in 1534 at the University of Leuven, an institution influenced by Erasmus of Rotterdam and offering diverse educational opportunities. In a competition at this university, Guyot placed 22nd out of 108 participants.
His life remains largely unknown for some time, as no reliable information exists regarding his subsequent activities. From 1546 onward, he worked at the Collegiate Church of St. Paul in Liège, where his first works were published. Later, he moved to St. Lambert's Cathedral, where he served as maître de chant. In 1563, he went to the imperial court in Vienna, but returned to Liège after the death of Emperor Ferdinand I.
The various phases of his career are reflected in his compositions. His time in Vienna produced compositions for eight to twelve voices, including the Mass "Missa Amour au cœur." After losing his position in Vienna, he lived in Liège again until his death in 1588.
Today, Guyot is primarily known for his works, which were disseminated by publishers such as Susato and Gardano. His music testifies to artistic maturity, characterized by innovative techniques and complex structures.