Premiere was vital software for constructing the trailer, as it allowed precise editing of footage, audio, effects and titles into a coherent sequence. Key functions included importing footage, arranging clips on multiple tracks in the timeline, adjusting clip opacity for layering, scaling clips to fit the frame, controlling audio levels, color correcting elements, and changing clip speed to fit the narrative and soundtrack. These various tools in Premiere were essential for completing the noir trailer 'Azrael' to a high standard.