In the eighties and early nineties, Vermeersch was part of the post-modern classical ensembles Union and Maximalist! and composed and performed music for dance productions by Rosas and Ultima Vez.
David Stubbs wrote that Profanisaurus "represents what you might call the maximalist tendency in obscenity".
He wrote film scores for Suite Sixteen (Dominique Deruddere) and The Pillow Book (Peter Greenaway); toured the world with his ensemble Maximalist and wrote and performed for theatre and ballet (amongst others Anne Teresa De Keersmaeker, Wim Vandekeybus, Roxanne Huilmand, Needcompany, Discordia, Beukelaars, Kortekaas, Ritsema).