In Zegers' music
microtonal clusters are the main object. His music is about slow developments in clusters via
glissandi. Because of that: his motto "
Glissandéz mes enfants, Glissandéz toujours!" after
César Franck: "
Moduléz mes enfants, Moduléz toujours!". Zegers most important work is
Pianophasing, composition for 20 to 60 pianos. This work is played in the United Kingdom, Australia and several places in The Netherlands. ==Important works==