Portrait of Philippe de Montmorency, Count of Hoorn

The painting employs chiaroscuro, with a dark background that highlights the subject's features and creates a sense of depth. The use of oil paint allows for detailed rendering of the subject's attire and facial features.

Adriaen Thomasz. Key, trained in the workshop of Willem Key, produced this work, continuing the studio's tradition of portrait painting. Key's technical skill was recognized in his time and later influenced other artists.