The Brussels court attracted some of the greatest composers and organists of the time at the beginning of the 17th century, including Peter Philips, Peeter Cornet, John Bull, and, a little later, Abraham Van den Kerckhoven, all of whom explored new ways of making organs sound. Flemish and Walloon organ builders throughout Europe, and in Spain and France in particular, were building instruments at that time that were to have a profound influence on organ building in those countries.