The JOC brings this variety to life. Since starting out in 1996, the JOC has developed a wide artistic scope. Nine of these millennials - Morris Kliphuis, Gideon van Gelder, Reinier Baas, Joris Roelofs, Tineke Postma, Ben van Gelder, Simin Tander, Maarten Hogenhuis and Maartje Meijer - recently presented their compositions for the Jazz Orchestra of the Concertgebouw.