being a sound engineer, prins produced and arranged mary kay's cd, "make someone happy", featuring toots thielemans. he co-produced three cds for judy niemack, richard rousselet's cd "waitin' for you", and sören fischer's cd "don't change your hair for me". he produced and arranged judy niemack's recording ""about time"" (sony jazz), her recent cd "blue nights" (blujazz), and her newest album "in the sundance" (blujazz). his most recent productions include "what's goin' on?" by the terrassa big band, and pianist walter norris' new project "elements 'n motion" (sunburst).