The initial request was that Doyle would be working with Williams' material, but eventually only "Hedwig's Theme", the leitmotif of the series, remained from the previous scores.
Kërkesa fillestare ishte që Doyle të punonte me materialin e Williams por vetëm “Kolona zanore e Heduigut”, lajtmotivi kryesor i serive, mbeti nga kompozimet e mëparshme.