The Happy Prince - Bedtime Story is a unique, animated adaptation of Oscar Wilde's classic fairytale. This provides a compelling, heartwarming, yet melancholic narrative which imparts universal life lessons that will ring true with audiences of all ages. The film endeavors to capture the magical essence of Wilde's narrative and infuse it with a cinematic enchantment.

The Happy Prince - Bedtime Story commences with the beautifully bejeweled statue of the 'Happy Prince' gazing down from his high pedestal, watching the daily life of the city. He sees the disparity between the affluence he represents and the poverty experienced by the citizens below him. The statue, who was once a sheltered prince in his life, now posthumously comprehends the pains and suffering of his subjects.

The Happy Prince's story is enlivened by the arrival of a little swallow who, having separated from his flock migrating to Egypt, finds solace at the feet of the gilded statue. The two form an unlikely friendship that proves instrumental in remedying the city's social struggle.

A significant aspect of the movie is the depth and nuance of its characters. The Happy Prince, despite being a statue, emotes powerfully throughout the film. This emotional aspect is delicately presented, instilling depth and humanity into a seemingly inanimate character. The little swallow, on the other hand, is the embodiment of fortitude. It provides a visage of courage and selflessness that wonderfully complements the Happy Prince's attributes.

The animation style adds a distinct magical charm to the storytelling. The illustrative aesthetic blends realism with fantasy producing a sophisticated visual spectacle. For audiences familiar with the story, it makes an evocative attempt at reviving nostalgia and instilling the narrative with fresh insights.

One highlight of the movie is its exploration of the themes of nobility, sacrifice, and compassion, which it navigates through uniquely composed scenes and poignant dialogues. By documenting the passion each character harbors for the city's inhabitants, the messages of a better world with equality and empathy is subtly injected into every frame.

Musically, the film shines. The original score is hauntingly beautiful, providing an atmospheric backdrop to the narrative that enhances the emotional intensity of each scene. The soundtrack manages to carry the heavy-duty of transmitting the film's underlying messages, making the movie experience an auditory delight as well.

The Happy Prince - Bedtime story offers an emotional journey of friendship and sacrifice, brilliantly encapsulated within the unique world of Oscar Wilde's imagination. Although driven by the sadness that surrounds the characters as they jump from one crisis to another, it's also imbued with a sense of hope that emotional bonds and selflessness can bring about a change in society's status-quo.

The performance of the voiceover artists is equally compelling, providing an added layer of depth to the characters. The nuances in the tone and pitch sensitively mirror the changing emotions, allowing audiences to connect on a deeper level with the characters. Seamless synchronization between the dialogue delivery and the animation sequence further complements the storytelling.

Though The Happy Prince - Bedtime Story is categorized as a children's film due to its animated nature and its roots in a fairy tale, it is just as powerful for adult audiences. It offers thought-provoking themes that encourage the viewer to reflect on life and one's responsibility to one’s fellow beings. The inclusion of real-world socio-economic differences and the exploration of sacrifice and love enthralls viewers of all ages, making it a brilliant watch for families.

In conclusion, The Happy Prince - Bedtime Story is a cinematic interpretation of Oscar Wilde’s classic tale which creates a layered, engaging narrative that speaks to audiences of all ages. The film’s rich animation, multi-faceted characters, profound themes, and the powerfully orchestrated score all contribute in making this movie a timeless classic one can’t afford to miss. This bedtime story, while charming, also imparts universal messages of love, sacrifice, and compassion that are enacted by the lovable characters. It’s an enchanting experience with numerous emotional highs and lows that definitely leaves a lasting impression on its viewers.