Create a 30-second, 1080p ultra-realistic cinematic commercial for fictional premium wireless headphones ECHO. A stylish young woman with long dark hair, natural makeup, black fitted top, oversized neutral jacket, wide-leg trousers and sneakers walks through a noisy modern city. Maintain consistent character, outfit and headphone design. She takes out the ECHO headphones and puts them on. The chaotic city noise suddenly fades, replaced by immersive music. As she walks, the environment subtly reacts to the music—traffic lights pulse, city lights glow rhythmically and people move naturally with the beat. She enters a subway where footsteps, train sounds and commuters blend into the music. Show her enjoying the experience with wide shots, tracking shots, facial close-ups and occasional detailed headphone shots. She exits into golden-hour light and walks along a rooftop, adjusting the headphone controls. End with her overlooking the city, eyes closed, completely immersed, followed by a cinematic hero close-up of the headphones. Voiceover: “Some sounds demand your attention. Others deserve to disappear. ECHO brings you closer to what matters, with immersive sound, powerful clarity and lasting comfort. Block out the noise. Feel every detail. Find your own frequency.” Style: Premium technology campaign, photorealistic, cinematic lighting, realistic skin and hair, smooth camera movement, shallow depth of field, natural city ambience, rich music and sophisticated sound design. Negative: No headphone morphing, identity drift, outfit changes, distorted anatomy, duplicated people, excessive CGI, subtitles, captions, random text or watermark.