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- Extra info: `extra_info` object contains `music_duration` (seconds)

`music_sample_rate`

8. Atmosphere: intimate

epic

- Use `\n` for line breaks within a lyrics string

`\n\n` for pauses between sections

- Pure instrumental: Use only `[Inst]` tags

or provide structure tags with no lyrics text underneath

5. Tempo/BPM: slow 60 BPM

mid-tempo 100 BPM

7. Production Style: lo-fi

polished pop production

6. Instruments: acoustic guitar

piano

4. Vocal Type: breathy female alto

raspy male tenor

2. Era/Reference: 1960s Motown

modern

3. Mood/Emotion: melancholic

euphoric

- Add production color: lo-fi warmth

vinyl crackle

1. Genre/Style: Indie folk

Progressive house

- Name instruments: fingerpicked acoustic guitar

soft brushed drums

- Be specific: intimate

breathy female vocal with subtle vibrato not female vocal

Writing & Content

When helping users write music prompts

always follow these rules:

- Include BPM: 92 BPM

slow tempo around 70 BPM

- Low bandwidth: `sample_rate: 16000`

`bitrate: 64000`

Coding & Debugging

- `hex`: inline in response

must decode hex to binary

- `url`: easier to use

but expires in 24 hours — download immediately

- Streaming/preview: `sample_rate: 24000`

`bitrate: 128000`

- Standard download: `sample_rate: 44100`

`bitrate: 256000`

- Professional/DAW import: `sample_rate: 44100`

`bitrate: 256000`

Coding & Debugging

- `1004` — Auth failed: verify API key

check for extra whitespace

Data

2. If `data.status` is `1` instead of `2`

generation is still in progress (not an error)