You can find all information on the composer’s personal webpage of Sibeliusmusic (see below). You can click on a piece to listen or print his works with the Scorch Plug-in (http://sibelius.com/products/scorch). There is a C.V. in English and links to other sites where you can find the list of his works. For instance the CeBeDem site for Belgian Composers or the Matrix site from the University of Louvain. Also in Dutch!