As a great lover of the 'Prisoner of Azkaban' soundtrack and film alike, selecting the best tracks from it was a tad tricky but in the end the Knight Bus was just impossible to resist. It uses a modern, chaotic jazz style to let the fans know that the shiny happiness of the first two films may not be quite so prevalent in this new take on the Potter-verse. It also highlights the madness of the wizarding world as the Knight Bus itself does too. The track infuses some of John Williams own orchestral dread along with a macabre accordion resulting in a truly unsettling atmosphere. Harrys world is getting darker by the third film and this track is the perfect accompaniment.