I was Composer-in-residence at Elmwood Normal School and and in mind to write a cantata for the massed choirs there. I was searching for a subject that would capture both my imagination and that of the children for whom it was to be written. My father is a scientist and the conversation he mentioned that pulsars (rapidly spinning, extremely dense stars) emit electromagnetic waves. When these waves are fed through a household radio set, part of the wave reproduces as an audible tone. A PhD research student working with pulsars, who also had an interest in music, wrote out the tones of various pulsars. I found this intriguing and promptly decided to use the theme of astronomy for the proposed work. To my amazement, when my father showed me the pulsar music written out on a treble and bass stave, the audible tones were clustered around an E major chord with some additional notes added. Thus Psalm of Stars came into being. These 13 notes became the germinal idea on which the whole work was based.