Our Cadbury P.S. microsite was a seamless blend of design and technology, creating an immersive auditory experience tuned to the rhythm of love. Upon login, users were treated to a personalized musical journey, facilitated by a responsive, pixel-perfect design that was a visual delight. The Spotify API worked in harmony, analyzing users' listening habits to curate playlists that were as personal as a secret love letter. Each playlist was topped with a user's favorite or chosen song, accompanied by a secret message, reflected in the chosen P.S. Chocolate bar. With easy sharing options, users could spread their personalized playlists, echoing the Valentine's Day theme across the digital sphere. All this was achieved while adhering to Cadbury's brand guidelines, ensuring retina display support, and optimizing for swift load times, resulting in a seamless and engaging user experience.