Since 1995, his work has broadened from entertainment and architectural lighting design to large scale live events, ceremonies, international expos and cultural festivals.

In 1999, Koert met Franco Dragone, and illuminates several projects for him, such as the prestigious Le Rêve, a show launched in April 2005 at the Wynn Las Vegas Hotel & Casino.

Koert also illuminates the corporate shows of Hermès, Coca-Cola, the National Bank of Belgium, Microsoft, Sun Microsystems, Ernst&Young, Siemens, Samsonite, Saatchi and Mercedes, and collaborates with artistic director Dirk Decloedt, and event agencies such as Any Performance, KCom, D-Side, DDMC and Guava.

In 2011, Koert conceived the lighting design of Metinvest corporate show in Ukraine, which was directed by Luc Petit CREATION and produced by K-Events agency.

Never ceasing to work for live theatre and spectacles, he also illuminates small contemporary forms such as “L’homme assis dans le couloir”, a play from Marguerite Duras, directed by Razerka Ben Sadia-Lavant at the Théâtre National de Chaillot in Paris.

Together, they designed the entire set, lighting, content and video animation of several projects such as, 2010 and 2011 editions of 'HALA' Layali Febrayer Music and Poetry festival in Kuwait, the concert “One phone One pass” in Brussels and “Cine Callao” in Madrid etc.

[3][4] Exhibitions and museums projects include: “Le droit de rêver” (The right to dream), on the occasion of the 25th commemoration of Jacques Brel's death, directed by Stan Colders, and “Magazine” for the National library in Hague.

The main idea was to obtain a “new aesthetic that was not related to the traditional image of Christmas," and to create a distinctive and long lasting experience for the public.