Harold worked on shows as The Wiz, Dirty Dancing, My Fair Lady, Mary Poppins, 42nd Street, West Side Story, The Little Mermaid, The Beauty of Magic (Las Vegas), Me and my girl (Tokyo) and Rocky (Broadway).
Wouter worked on shows as Les Misérables, Sunset Boulevard, Petticoat, Oliver, and Saturday Night Fever (Milano).
Together they worked on The Wizard of Oz, The Sleeping Beauty, Beauty And The Beast, Tin Tin, Hairspray, Fantasia and Taboo (London).
In 2013 they opened their own company Headworks. Beside the creation of hair work and wigs, they design make-up and wigs for different productions as Pauline en Paulette, Cinderella, Das Wunder von Bern (Hamburg) , Dreamgirls, 14/18, Grease, The Bodyguard, Love Never Dies (Hamburg), Cats (Paris), Rocky (Stuttgart), Monster High, The Phantom of the Opera (Paris), Hair, Puss in Boots, Wicky (Germany), Footloose (Milano),Hinterm Horizont (Hamburg), El Guardaespaldas (Madrid), The little mermaid , 40/45, CARO, Anastasia (Madrid, Stuttgart, Scheveningen, Tokyo) Daens (Belgium), La Cage aux Folles, Forget Barbara, Tina (Hamburg, Utrecht, Madrid, Stuttgart) and Red Starline