Belgian pianist and composer. He won first prize in a local music competition at the age of 11 and subsequently enrolled at the Brussels Conservatoire. His main teacher there was Louis Brassin, a former pupil of Ignaz Moscheles. After graduating with high distinction from the Conservatoire at the age of 17, De Greef went to Weimar to complete his studies under Franz Liszt. Following the Weimar sojourn, De Greef embarked on a career as a concert pianist, travelling widely. De Greef composed a sizeable quantity of music, virtually all of which is now unknown. Among his works are two piano concertos. He was a devoted teacher, and taught piano at the Brussels Conservatoire for many years.