{
  "title": "Steamed Glass",
  "lyrics": "[纯音乐]",
  "prompt": "Genre: Jazzy Lo-fi Hip Hop / Chillhop; BPM: 80; Key: A minor; Rhythm: Relaxed, unquantized boom-bap groove with a soft kick and vinyl-crackle snare on 2 & 4; driving pocket syncopation from the swung 16th-note hi-hats.; Instruments: Upright piano, audible pedal noise; Sampled drum kit, vinyl texture; Sub-bass synth, round sine; Warm string pad, low in mix.; Vocals: No Vocals (Instrumental); Mood: Sitting by a window on a rainy afternoon, watching droplets race down the glass, a warm mug of tea steaming in your hands.; Production: High-Fidelity, Pristine Radio-Ready Mix with expensive analogue warmth and silky smooth high-end; heavy vinyl crackle, tape saturation, gentle sidechain compression from the kick, and an intimate mono-centric stereo field.; Highlight: The single, slightly sharp grace note on the piano hitting just before the downbeat of a new phrase, creating a fleeting, poignant dissonance against the warm pad.",
  "cover_prompt": "A rain-streaked window pane in extreme close-up, amber light bleeding through from a lamp beyond the glass, droplets catching warm gold and deep shadow in soft bokeh. The surface feels almost tactile — condensation hazing the edges, a ceramic mug silhouetted faintly in the background on a worn wooden sill. Muted earth tones, dusty ochre and slate blue, with a faint film-grain overlay lending a lo-fi, nostalgic weight to the stillness. Cinematic macro photography with analogue film texture.",
  "song_id": "04_nostalgia_20260514"
}