Toek Numan studied composition with Geert van Keulen at the Sweelinck Conservatory in Amsterdam. He plays clarinet, saxophone and piano and began composing at the age of eightteen.
In 1996 Toek Numan made his debut on Dutch television with Burnout, commissioned by VPRO Television and written for Combustion Chamber. A year later he composed Tovertuin for Het Amsterdams Kwintet and in 1998 he wrote Il Giocoliere Errante for the Asko Ensemble. For the latter Toek Numan received the Encouragement Music Prize 1999 of the City of Amsterdam. Since then, he has worked with musicians and ensembles such as Tomoko Mukaiyama, Ren Eckhardt, Orkest De Volharding, Dutch Wind Ensemble, Ensemble De Ereprijs, Calefax and Noord Nederlands Orkest. One of the highlights was Maantuin (2001), premiered by the orchestra New Sinfonietta Amsterdam in the big hall of the Concertgebouw during the Holland Festival 2001.
In addition to concert music, Toek Numan has written several soundtracks for short movies such as Johnny (1997) by young film-director Dylan de Jong. He also collaborated with dancer/performer David Lakein in the performances Breakfast (1996), The Phenomenology of Ennui (1996), and Chapiera (2000).