 In Europe Nowak has worked as a conductor with the Royal Philharmonic Orchestra, London Symphony Orchestra, Monte-Carlo Philharmonic Orchestra, Orchestre National de France, Orchestre Lamoureaux in Paris, Orchestra dell'Accademia Nazionale di Santa Cecilia in Rome, RAI orchestras in Milan, Rome and Turin, Orchestre de la Suisse Romande in Geneva, Tonhalle Orchestra in Zürich, National Orchestra of Belgium, Luxembourg Philharmonic Orchestra, Warsaw Philharmonic Orchestra, National Orchestra of Spain and the Gulbenkian Orchestra in Lisbon.He has also conducted many times in Scandinavia, performing with the philharmonic and radio orchestras of Oslo, Stockholm, Helsinki and Copenhagen.In North America, Nowak has conducted the Montreal Symphony, Vancouver Symphony, Baltimore Symphony, Cincinnati Symphony, Carmel Symphony, San Diego Symphony, Buffalo Philharmonic orchestras and the Xalapa Symphony in Mexico.