Joop Stokkermans  Johannes Andreas "Joop" Stokkermans (20 February 1937 in Leiden – 25 October 2012 in Hilversum) was a Dutch composer and pianist. Stokkermans studied piano and composition with Theo van der Pas at the Royal Conservatory of The Hague. He received a Golden Harp award in 1974 for his entire œuvre.