[1] Since 1979 he has played with numerous music ensembles: Cumulus (with Ab Baars and Harry de Wit), JC Tans & Rockets, Theo Loevendie Quintet, Guus Janssen Septet, Loos (Peter van Bergen), Maarten Altena Ensemble and Podiumtrio.
He has been invited to play with The Ex, Sonic Youth, Gruppo Sportivo and the Nieuw Ensemble (led by Ed Spanjaard).
He has also played with Henry Threadgill, The Berlin Contemporary Jazz Orchestra (led by Alexander von Schlippenbach), the European Big Band (led by Cecil Taylor), the John Carter Project, Mingus Big Band (Epitaph, directed by Gunther Schuller).
He is currently active with Misha Mengelberg's Instant Composers Pool (Down Beat Poll winner 2002, Talent Deserving Wider Recognition), Gerry Hemingway Quintet, Franky Douglas' Sunchild, Bik Bent Braam, Albrecht Maurer Trio Works, Nocando, Carl Ludwig Hübsch's Longrun Development of the Universe, Frank Gratkowski Quartet, Available Jelly and Sean Bergin's MOB.
He has a running project under the name Wollo's World, where he brings together different artistic combinations, ranging from duos with tap-dancer Marije Nie and bassist Wilbert de Joode to a quartet with Misha Mengelberg, Mats Gustafsson and Wilbert de Joode.