Serene Digital Art of a Seventeen-Year-Old Girl in Mystery

Create a digital painting of a seventeen-year-old Caucasian girl with long chestnut hair and green eyes. She is wearing a pendant with a musical note around her neck. The background is a dark cityscape, painted with deep purple and black tones, capturing a sense of mystery and solitude. The atmosphere of the painting should be soft and dreamlike, the technique used bears similarities to the gothic era with the soft brushstrokes and mysterious tones.