Koen Cosaert is Carillonneur for the Belgian cities of Roeselare, Harelbeke and Izegem.
He was graduated with distinction from the Royal Carillon School in Mechelen and holds a masters degree in the history of art and musicology from Louvain's Catholic University. He studied the organ at the conservatorium of his hometown, Kortrijk.
Since 1987 Koen Cosaert has been a teacher in carillon, campanology, harmony, music theory, and piano at the Mechelen Carillon School. This year he was invited as visiting professor of carillon at the St.-Petersburg University in Russia.
A member of the School's Board of Directors, he also serves as musical advisor for the international Queen Fabiola Carillon Competition.
He performs frequent carillon and organ recitals in Belgium, the Netherlands, the USA, Russia, Germany, France, England, Ireland and Spain.
As archivist for the Royal Carillon School, he lectures on topics of campanological interest and has published numerous books and articles.