Untitled AI art by @amused-trove

Create a captivating book cover for a mystery drama novel titled 'A Última Melodia'. The design should feature an elegant grand piano with illuminated keys glowing softly in a golden light, surrounded by deep shadows. In the background, subtly include the silhouette of Lisbon’s iconic landmarks, such as the 25th of April Bridge and traditional buildings, all evoking a nostalgic atmosphere. Incorporate faint musical notes or a treble clef gently drifting across the cover, symbolizing the mysterious melody at the heart of the story. The title 'A Última Melodia' should be displayed in a bold, classic font, with a vintage and timeless feel. The overall design should create a sense of suspense, drama, and the enchanting beauty of music, with a color palette of dark tones contrasted by golden and warm hues.